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7605eb5b SW |
1 | /* |
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 | ||
36 | struct tegra_pcm_dma_params { | |
37 | unsigned long addr; | |
38 | unsigned long wrap; | |
39 | unsigned long width; | |
40 | unsigned long req_sel; | |
41 | }; | |
42 | ||
43 | struct 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 |