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 13 #define UAC1_OUT_EP_MAX_PACKET_SIZE 200 14 #define UAC1_DEF_CCHMASK 0x3 15 #define UAC1_DEF_CSRATE 48000 16 #define UAC1_DEF_CSSIZE 2 17 #define UAC1_DEF_PCHMASK 0x3 18 #define UAC1_DEF_PSRATE 48000 19 #define UAC1_DEF_PSSIZE 2 20 #define UAC1_DEF_REQ_NUM 2 21 #define UAC1_DEF_INT_REQ_NUM 10 22 23 #define UAC1_DEF_MUTE_PRESENT 1 24 #define UAC1_DEF_VOLUME_PRESENT 1 25 #define UAC1_DEF_MIN_DB (-100*256) /* -100 dB */ 26 #define UAC1_DEF_MAX_DB 0 /* 0 dB */ 27 #define UAC1_DEF_RES_DB (1*256) /* 1 dB */ 28 29 30 struct f_uac1_opts { 31 struct usb_function_instance func_inst; 32 int c_chmask; 33 int c_srate; 34 int c_ssize; 35 int p_chmask; 36 int p_srate; 37 int p_ssize; 38 39 bool p_mute_present; 40 bool p_volume_present; 41 s16 p_volume_min; 42 s16 p_volume_max; 43 s16 p_volume_res; 44 45 bool c_mute_present; 46 bool c_volume_present; 47 s16 c_volume_min; 48 s16 c_volume_max; 49 s16 c_volume_res; 50 51 int req_number; 52 unsigned bound:1; 53 54 struct mutex lock; 55 int refcnt; 56 }; 57 58 #endif /* __U_UAC1_H */ 59