/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Driver for the Conexant CX25821 PCIe bridge
*
* Copyright ( C ) 2009 Conexant Systems Inc .
* Authors < shu . lin @ conexant . com > , < hiep . huynh @ conexant . com >
*/
#ifndef __CX25821_AUDIO_H__
#define __CX25821_AUDIO_H__
#define USE_RISC_NOOP 1
#define LINES_PER_BUFFER 15
#define AUDIO_LINE_SIZE 128
/* Number of buffer programs to use at once. */
#define NUMBER_OF_PROGRAMS 8
/*
* Max size of the RISC program for a buffer . - worst case is 2 writes per line
* Space is also added for the 4 no - op instructions added on the end .
*/
#ifndef USE_RISC_NOOP
#define MAX_BUFFER_PROGRAM_SIZE \
(2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE + \
RISC_WRITECR_INSTRUCTION_SIZE * 4 )
#endif
/* MAE 12 July 2005 Try to use NOOP RISC instruction instead */
#ifdef USE_RISC_NOOP
#define MAX_BUFFER_PROGRAM_SIZE \
(2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE + \
RISC_NOOP_INSTRUCTION_SIZE * 4 )
#endif
/* Sizes of various instructions in bytes. Used when adding instructions. */
#define RISC_WRITE_INSTRUCTION_SIZE 12
#define RISC_JUMP_INSTRUCTION_SIZE 12
#define RISC_SKIP_INSTRUCTION_SIZE 4
#define RISC_SYNC_INSTRUCTION_SIZE 4
#define RISC_WRITECR_INSTRUCTION_SIZE 16
#define RISC_NOOP_INSTRUCTION_SIZE 4
#define MAX_AUDIO_DMA_BUFFER_SIZE \
(MAX_BUFFER_PROGRAM_SIZE * NUMBER_OF_PROGRAMS + \
RISC_SYNC_INSTRUCTION_SIZE)
#endif
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