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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /drivers/media/pci/cx25821/cx25821-audio.h | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/media/pci/cx25821/cx25821-audio.h')
| -rw-r--r-- | drivers/media/pci/cx25821/cx25821-audio.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/media/pci/cx25821/cx25821-audio.h b/drivers/media/pci/cx25821/cx25821-audio.h new file mode 100644 index 000000000..55df64091 --- /dev/null +++ b/drivers/media/pci/cx25821/cx25821-audio.h @@ -0,0 +1,58 @@ +/* + * 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. + */ + +#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 |