diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
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committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/staging/cx25821/cx25821-audio.h | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'drivers/staging/cx25821/cx25821-audio.h')
-rw-r--r-- | drivers/staging/cx25821/cx25821-audio.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/staging/cx25821/cx25821-audio.h b/drivers/staging/cx25821/cx25821-audio.h new file mode 100644 index 00000000000..27717253227 --- /dev/null +++ b/drivers/staging/cx25821/cx25821-audio.h | |||
@@ -0,0 +1,59 @@ | |||
1 | /* | ||
2 | * Driver for the Conexant CX25821 PCIe bridge | ||
3 | * | ||
4 | * Copyright (C) 2009 Conexant Systems Inc. | ||
5 | * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com> | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License as published by | ||
9 | * the Free Software Foundation; either version 2 of the License, or | ||
10 | * (at your option) any later version. | ||
11 | * | ||
12 | * This program is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | * | ||
16 | * GNU General Public License for more details. | ||
17 | * | ||
18 | * You should have received a copy of the GNU General Public License | ||
19 | * along with this program; if not, write to the Free Software | ||
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
21 | */ | ||
22 | |||
23 | #ifndef __CX25821_AUDIO_H__ | ||
24 | #define __CX25821_AUDIO_H__ | ||
25 | |||
26 | #define USE_RISC_NOOP 1 | ||
27 | #define LINES_PER_BUFFER 15 | ||
28 | #define AUDIO_LINE_SIZE 128 | ||
29 | |||
30 | /* Number of buffer programs to use at once. */ | ||
31 | #define NUMBER_OF_PROGRAMS 8 | ||
32 | |||
33 | /* | ||
34 | * Max size of the RISC program for a buffer. - worst case is 2 writes per line | ||
35 | * Space is also added for the 4 no-op instructions added on the end. | ||
36 | */ | ||
37 | #ifndef USE_RISC_NOOP | ||
38 | #define MAX_BUFFER_PROGRAM_SIZE \ | ||
39 | (2*LINES_PER_BUFFER*RISC_WRITE_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE*4) | ||
40 | #endif | ||
41 | |||
42 | /* MAE 12 July 2005 Try to use NOOP RISC instruction instead */ | ||
43 | #ifdef USE_RISC_NOOP | ||
44 | #define MAX_BUFFER_PROGRAM_SIZE \ | ||
45 | (2*LINES_PER_BUFFER*RISC_WRITE_INSTRUCTION_SIZE + RISC_NOOP_INSTRUCTION_SIZE*4) | ||
46 | #endif | ||
47 | |||
48 | /* Sizes of various instructions in bytes. Used when adding instructions. */ | ||
49 | #define RISC_WRITE_INSTRUCTION_SIZE 12 | ||
50 | #define RISC_JUMP_INSTRUCTION_SIZE 12 | ||
51 | #define RISC_SKIP_INSTRUCTION_SIZE 4 | ||
52 | #define RISC_SYNC_INSTRUCTION_SIZE 4 | ||
53 | #define RISC_WRITECR_INSTRUCTION_SIZE 16 | ||
54 | #define RISC_NOOP_INSTRUCTION_SIZE 4 | ||
55 | |||
56 | #define MAX_AUDIO_DMA_BUFFER_SIZE \ | ||
57 | (MAX_BUFFER_PROGRAM_SIZE * NUMBER_OF_PROGRAMS + RISC_SYNC_INSTRUCTION_SIZE) | ||
58 | |||
59 | #endif | ||