56 строки
1.4 KiB
C
56 строки
1.4 KiB
C
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/*
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* tegra_pcm.h - Definitions for Tegra PCM driver
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*
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* Author: Stephen Warren <swarren@nvidia.com>
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* Copyright (C) 2010 - NVIDIA, Inc.
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*
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* Based on code copyright/by:
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*
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* Copyright (c) 2009-2010, NVIDIA Corporation.
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* Scott Peterson <speterson@nvidia.com>
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*
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* Copyright (C) 2010 Google, Inc.
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* Iliyan Malchev <malchev@google.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __TEGRA_PCM_H__
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#define __TEGRA_PCM_H__
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#include <mach/dma.h>
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struct tegra_pcm_dma_params {
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unsigned long addr;
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unsigned long wrap;
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unsigned long width;
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unsigned long req_sel;
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};
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struct tegra_runtime_data {
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struct snd_pcm_substream *substream;
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spinlock_t lock;
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int running;
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int dma_pos;
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int dma_pos_end;
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int period_index;
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int dma_req_idx;
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struct tegra_dma_req dma_req[2];
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struct tegra_dma_channel *dma_chan;
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};
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#endif
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