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Stephen Warren7605eb52011-01-07 22:36:13 -07001/*
2 * tegra_pcm.h - Definitions for Tegra PCM driver
3 *
4 * Author: Stephen Warren <swarren@nvidia.com>
5 * Copyright (C) 2010 - NVIDIA, Inc.
6 *
7 * Based on code copyright/by:
8 *
9 * Copyright (c) 2009-2010, NVIDIA Corporation.
10 * Scott Peterson <speterson@nvidia.com>
11 *
12 * Copyright (C) 2010 Google, Inc.
13 * Iliyan Malchev <malchev@google.com>
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * version 2 as published by the Free Software Foundation.
18 *
19 * This program is distributed in the hope that it will be useful, but
20 * WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 * General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
27 * 02110-1301 USA
28 *
29 */
30
31#ifndef __TEGRA_PCM_H__
32#define __TEGRA_PCM_H__
33
34#include <mach/dma.h>
35
36struct tegra_pcm_dma_params {
37 unsigned long addr;
38 unsigned long wrap;
39 unsigned long width;
40 unsigned long req_sel;
41};
42
43struct tegra_runtime_data {
44 struct snd_pcm_substream *substream;
45 spinlock_t lock;
46 int running;
47 int dma_pos;
48 int dma_pos_end;
49 int period_index;
50 int dma_req_idx;
51 struct tegra_dma_req dma_req[2];
52 struct tegra_dma_channel *dma_chan;
53};
54
55#endif