1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * u_uac2.h 4 * 5 * Utility definitions for UAC2 function 6 * 7 * Copyright (c) 2014 Samsung Electronics Co., Ltd. 8 * http://www.samsung.com 9 * 10 * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com> 11 */ 12 13 #ifndef U_UAC2_H 14 #define U_UAC2_H 15 16 #include <linux/usb/composite.h> 17 18 #define UAC2_DEF_PCHMASK 0x3 19 #define UAC2_DEF_PSRATE 48000 20 #define UAC2_DEF_PSSIZE 2 21 #define UAC2_DEF_CCHMASK 0x3 22 #define UAC2_DEF_CSRATE 64000 23 #define UAC2_DEF_CSSIZE 2 24 #define UAC2_DEF_CSYNC USB_ENDPOINT_SYNC_ASYNC 25 26 #define UAC2_DEF_MUTE_PRESENT 1 27 #define UAC2_DEF_VOLUME_PRESENT 1 28 #define UAC2_DEF_MIN_DB (-100*256) /* -100 dB */ 29 #define UAC2_DEF_MAX_DB 0 /* 0 dB */ 30 #define UAC2_DEF_RES_DB (1*256) /* 1 dB */ 31 32 #define UAC2_DEF_REQ_NUM 2 33 #define UAC2_DEF_INT_REQ_NUM 10 34 35 struct f_uac2_opts { 36 struct usb_function_instance func_inst; 37 int p_chmask; 38 int p_srate; 39 int p_ssize; 40 int c_chmask; 41 int c_srate; 42 int c_ssize; 43 int c_sync; 44 45 bool p_mute_present; 46 bool p_volume_present; 47 s16 p_volume_min; 48 s16 p_volume_max; 49 s16 p_volume_res; 50 51 bool c_mute_present; 52 bool c_volume_present; 53 s16 c_volume_min; 54 s16 c_volume_max; 55 s16 c_volume_res; 56 57 int req_number; 58 int fb_max; 59 bool bound; 60 61 struct mutex lock; 62 int refcnt; 63 }; 64 65 #endif 66