1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * u_uac1.h - Utility definitions for UAC1 function
4 *
5 * Copyright (C) 2016 Ruslan Bilovol <ruslan.bilovol@gmail.com>
6 */
7
8#ifndef __U_UAC1_H
9#define __U_UAC1_H
10
11#include <linux/usb/composite.h>
12#include "uac_common.h"
13
14#define UAC1_OUT_EP_MAX_PACKET_SIZE 200
15#define UAC1_DEF_CCHMASK 0x3
16#define UAC1_DEF_CSRATE 48000
17#define UAC1_DEF_CSSIZE 2
18#define UAC1_DEF_PCHMASK 0x3
19#define UAC1_DEF_PSRATE 48000
20#define UAC1_DEF_PSSIZE 2
21#define UAC1_DEF_REQ_NUM 2
22#define UAC1_DEF_INT_REQ_NUM 10
23
24#define UAC1_DEF_MUTE_PRESENT 1
25#define UAC1_DEF_VOLUME_PRESENT 1
26#define UAC1_DEF_MIN_DB (-100*256) /* -100 dB */
27#define UAC1_DEF_MAX_DB 0 /* 0 dB */
28#define UAC1_DEF_RES_DB (1*256) /* 1 dB */
29
30
31struct f_uac1_opts {
32 struct usb_function_instance func_inst;
33 int c_chmask;
34 int c_srates[UAC_MAX_RATES];
35 int c_ssize;
36 int p_chmask;
37 int p_srates[UAC_MAX_RATES];
38 int p_ssize;
39
40 bool p_mute_present;
41 bool p_volume_present;
42 s16 p_volume_min;
43 s16 p_volume_max;
44 s16 p_volume_res;
45
46 bool c_mute_present;
47 bool c_volume_present;
48 s16 c_volume_min;
49 s16 c_volume_max;
50 s16 c_volume_res;
51
52 int req_number;
53 unsigned bound:1;
54
55 char function_name[USB_MAX_STRING_LEN];
56
57 char p_it_name[USB_MAX_STRING_LEN];
58 char p_it_ch_name[USB_MAX_STRING_LEN];
59 char p_ot_name[USB_MAX_STRING_LEN];
60 char p_fu_vol_name[USB_MAX_STRING_LEN];
61
62 char c_it_name[USB_MAX_STRING_LEN];
63 char c_it_ch_name[USB_MAX_STRING_LEN];
64 char c_ot_name[USB_MAX_STRING_LEN];
65 char c_fu_vol_name[USB_MAX_STRING_LEN];
66
67 struct mutex lock;
68 int refcnt;
69};
70
71#endif /* __U_UAC1_H */
72

source code of linux/drivers/usb/gadget/function/u_uac1.h