Gitiles
Code Review Sign In
review.evervolv.com / android_kernel_oneplus_msm8996 / be055b2f89b5842f41363b5655a33dffb51a8294 / . / drivers / media / pci / cx25821 / cx25821-audio.h
blob: 1fc2d24f5110ac400e80f94ec5112ba4f0bc42c7 [file] [log] [blame]
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]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
Leonid V. Fedorenchik8e249582011-10-22 01:43:28 -0300[diff] [blame]26#define USE_RISC_NOOP 1
27#define LINES_PER_BUFFER 15
28#define AUDIO_LINE_SIZE 128
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]29
Palash Bandyopadhyay6d8c2ba2010-07-04 14:15:38 -0300[diff] [blame]30/* Number of buffer programs to use at once. */
Leonid V. Fedorenchik8e249582011-10-22 01:43:28 -0300[diff] [blame]31#define NUMBER_OF_PROGRAMS 8
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]32
Palash Bandyopadhyay6d8c2ba2010-07-04 14:15:38 -0300[diff] [blame]33/*
Ruslan Pisareve4115bb2010-09-27 10:01:36 -0300[diff] [blame]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 */
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]37#ifndef USE_RISC_NOOP
Leonid V. Fedorenchik6f1f0e82011-10-22 01:43:29 -0300[diff] [blame]38#define MAX_BUFFER_PROGRAM_SIZE \
39 (2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE + \
40 RISC_WRITECR_INSTRUCTION_SIZE * 4)
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]41#endif
42
Palash Bandyopadhyay6d8c2ba2010-07-04 14:15:38 -0300[diff] [blame]43/* MAE 12 July 2005 Try to use NOOP RISC instruction instead */
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]44#ifdef USE_RISC_NOOP
Leonid V. Fedorenchik6f1f0e82011-10-22 01:43:29 -0300[diff] [blame]45#define MAX_BUFFER_PROGRAM_SIZE \
46 (2 * LINES_PER_BUFFER * RISC_WRITE_INSTRUCTION_SIZE + \
47 RISC_NOOP_INSTRUCTION_SIZE * 4)
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]48#endif
49
Palash Bandyopadhyay6d8c2ba2010-07-04 14:15:38 -0300[diff] [blame]50/* Sizes of various instructions in bytes. Used when adding instructions. */
Leonid V. Fedorenchik6f1f0e82011-10-22 01:43:29 -0300[diff] [blame]51#define RISC_WRITE_INSTRUCTION_SIZE 12
52#define RISC_JUMP_INSTRUCTION_SIZE 12
53#define RISC_SKIP_INSTRUCTION_SIZE 4
54#define RISC_SYNC_INSTRUCTION_SIZE 4
55#define RISC_WRITECR_INSTRUCTION_SIZE 16
56#define RISC_NOOP_INSTRUCTION_SIZE 4
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]57
Leonid V. Fedorenchik6f1f0e82011-10-22 01:43:29 -0300[diff] [blame]58#define MAX_AUDIO_DMA_BUFFER_SIZE \
59 (MAX_BUFFER_PROGRAM_SIZE * NUMBER_OF_PROGRAMS + \
60 RISC_SYNC_INSTRUCTION_SIZE)
Mauro Carvalho Chehab1a9fc852009-09-13 11:30:11 -0300[diff] [blame]61
62#endif