60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
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/*
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* Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* Based on sound/soc/imx/imx-pcm-dma-mx2.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/dmaengine_pcm.h>
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#include "mxs-pcm.h"
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static const struct snd_pcm_hardware snd_mxs_hardware = {
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.info = SNDRV_PCM_INFO_MMAP |
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SNDRV_PCM_INFO_MMAP_VALID |
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SNDRV_PCM_INFO_PAUSE |
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SNDRV_PCM_INFO_RESUME |
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SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_HALF_DUPLEX,
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.period_bytes_min = 32,
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.period_bytes_max = 8192,
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.periods_min = 1,
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.periods_max = 52,
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.buffer_bytes_max = 64 * 1024,
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.fifo_size = 32,
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};
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static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
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.pcm_hardware = &snd_mxs_hardware,
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.prealloc_buffer_size = 64 * 1024,
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};
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int mxs_pcm_platform_register(struct device *dev)
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{
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return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
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SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
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}
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EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
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MODULE_LICENSE("GPL");
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