1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Driver for the Conexant CX25821 PCIe bridge 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2009 Conexant Systems Inc. 6*4882a593Smuzhiyun * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef __CX25821_AUDIO_H__ 10*4882a593Smuzhiyun #define __CX25821_AUDIO_H__ 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #define USE_RISC_NOOP 1 13*4882a593Smuzhiyun #define LINES_PER_BUFFER 15 14*4882a593Smuzhiyun #define AUDIO_LINE_SIZE 128 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* Number of buffer programs to use at once. */ 17*4882a593Smuzhiyun #define NUMBER_OF_PROGRAMS 8 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun /* 20*4882a593Smuzhiyun * Max size of the RISC program for a buffer. - worst case is 2 writes per line 21*4882a593Smuzhiyun * Space is also added for the 4 no-op instructions added on the end. 22*4882a593Smuzhiyun */ 23*4882a593Smuzhiyun #ifndef USE_RISC_NOOP 24*4882a593Smuzhiyun #define MAX_BUFFER_PROGRAM_SIZE \ 25*4882a593Smuzhiyun (2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE + \ 26*4882a593Smuzhiyun RISC_WRITECR_INSTRUCTION_SIZE * 4) 27*4882a593Smuzhiyun #endif 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun /* MAE 12 July 2005 Try to use NOOP RISC instruction instead */ 30*4882a593Smuzhiyun #ifdef USE_RISC_NOOP 31*4882a593Smuzhiyun #define MAX_BUFFER_PROGRAM_SIZE \ 32*4882a593Smuzhiyun (2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE + \ 33*4882a593Smuzhiyun RISC_NOOP_INSTRUCTION_SIZE * 4) 34*4882a593Smuzhiyun #endif 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* Sizes of various instructions in bytes. Used when adding instructions. */ 37*4882a593Smuzhiyun #define RISC_WRITE_INSTRUCTION_SIZE 12 38*4882a593Smuzhiyun #define RISC_JUMP_INSTRUCTION_SIZE 12 39*4882a593Smuzhiyun #define RISC_SKIP_INSTRUCTION_SIZE 4 40*4882a593Smuzhiyun #define RISC_SYNC_INSTRUCTION_SIZE 4 41*4882a593Smuzhiyun #define RISC_WRITECR_INSTRUCTION_SIZE 16 42*4882a593Smuzhiyun #define RISC_NOOP_INSTRUCTION_SIZE 4 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun #define MAX_AUDIO_DMA_BUFFER_SIZE \ 45*4882a593Smuzhiyun (MAX_BUFFER_PROGRAM_SIZE * NUMBER_OF_PROGRAMS + \ 46*4882a593Smuzhiyun RISC_SYNC_INSTRUCTION_SIZE) 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun #endif 49