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 31 struct 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[32]; 56 57 struct mutex lock; 58 int refcnt; 59 }; 60 61 #endif /* __U_UAC1_H */ 62