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Use the dmaengine based Tegra APB DMA driver for data transfer between SPI fifo and memory in place of legacy Tegra APB DMA. Because generic soc-dmaengine-pcm uses the DMAs API based on dmaengine, using the exported APIs provided by this generic driver. The new driver is selected if legacy driver is not selected and new dma driver is enabled through config file. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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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) 2010,2012 - 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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#if defined(CONFIG_TEGRA_SYSTEM_DMA)
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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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int tegra_pcm_platform_register(struct device *dev);
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void tegra_pcm_platform_unregister(struct device *dev);
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#endif
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