518de86ba1
Previously, the ASoC 'platform' (PCM/DMA) object was instantiated via a platform_device. This didn't represent the hardware well, since there was no separate hardware associated with this platform_device; it was a virtual device with sole purpose to call snd_soc_register_platform(). This mechanism required all board files to register this device, and all ASoC machine drivers to create and register this device when booting using device tree. This change removes the platform_device completely. Each Tegra DAI now registers the ASoC 'platform' itself. Machine drivers are adjusted for the new 'platform' name. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
59 lines
1.5 KiB
C
59 lines
1.5 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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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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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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