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46 lines
1.1 KiB
46 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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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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#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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