44 строки
1.2 KiB
C
44 строки
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com
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* Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
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*/
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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/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/dmaengine_pcm.h>
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#include "udma-pcm.h"
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static const struct snd_pcm_hardware udma_pcm_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 | SNDRV_PCM_INFO_RESUME |
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SNDRV_PCM_INFO_NO_PERIOD_WAKEUP |
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SNDRV_PCM_INFO_INTERLEAVED,
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.buffer_bytes_max = SIZE_MAX,
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.period_bytes_min = 32,
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.period_bytes_max = SZ_64K,
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.periods_min = 2,
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.periods_max = UINT_MAX,
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};
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static const struct snd_dmaengine_pcm_config udma_dmaengine_pcm_config = {
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.pcm_hardware = &udma_pcm_hardware,
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.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
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};
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int udma_pcm_platform_register(struct device *dev)
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{
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return devm_snd_dmaengine_pcm_register(dev, &udma_dmaengine_pcm_config,
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0);
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}
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EXPORT_SYMBOL_GPL(udma_pcm_platform_register);
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MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
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MODULE_DESCRIPTION("UDMA PCM ASoC platform driver");
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MODULE_LICENSE("GPL v2");
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