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