48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/*
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* Copyright (c) 2018 Rockchip Electronics Co. Ltd.
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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 version 2 as
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* published by the Free Software Foundation.
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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 "rockchip_pcm.h"
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static const struct snd_pcm_hardware snd_rockchip_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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.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 rk_dmaengine_pcm_config = {
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.pcm_hardware = &snd_rockchip_hardware,
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.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
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.prealloc_buffer_size = 32 * 1024,
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};
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int rockchip_pcm_platform_register(struct device *dev)
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{
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return devm_snd_dmaengine_pcm_register(dev, &rk_dmaengine_pcm_config,
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SND_DMAENGINE_PCM_FLAG_COMPAT);
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}
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EXPORT_SYMBOL_GPL(rockchip_pcm_platform_register);
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MODULE_LICENSE("GPL v2");
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