| /* |
| * Driver for the Conexant CX25821 PCIe bridge |
| * |
| * Copyright (C) 2009 Conexant Systems Inc. |
| * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #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 |
