| /* 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 |
