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55 lines
1.8 KiB
55 lines
1.8 KiB
/* |
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* ALSA PCM interface for ST SPEAr Processors |
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* |
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* sound/soc/spear/spear_pcm.c |
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* |
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* Copyright (C) 2012 ST Microelectronics |
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* Rajeev Kumar<[email protected]> |
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* |
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* This file is licensed under the terms of the GNU General Public |
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* License version 2. This program is licensed "as is" without any |
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* warranty of any kind, whether express or implied. |
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*/ |
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#include <linux/module.h> |
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#include <linux/dmaengine.h> |
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#include <linux/platform_device.h> |
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#include <sound/dmaengine_pcm.h> |
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#include <sound/pcm.h> |
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#include <sound/soc.h> |
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#include <sound/spear_dma.h> |
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#include "spear_pcm.h" |
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static const struct snd_pcm_hardware spear_pcm_hardware = { |
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.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
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SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | |
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SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME), |
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.buffer_bytes_max = 16 * 1024, /* max buffer size */ |
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.period_bytes_min = 2 * 1024, /* 1 msec data minimum period size */ |
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.period_bytes_max = 2 * 1024, /* maximum period size */ |
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.periods_min = 1, /* min # periods */ |
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.periods_max = 8, /* max # of periods */ |
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.fifo_size = 0, /* fifo size in bytes */ |
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}; |
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static const struct snd_dmaengine_pcm_config spear_dmaengine_pcm_config = { |
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.pcm_hardware = &spear_pcm_hardware, |
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.prealloc_buffer_size = 16 * 1024, |
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}; |
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int devm_spear_pcm_platform_register(struct device *dev, |
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struct snd_dmaengine_pcm_config *config, |
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bool (*filter)(struct dma_chan *chan, void *slave)) |
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{ |
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*config = spear_dmaengine_pcm_config; |
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config->compat_filter_fn = filter; |
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return devm_snd_dmaengine_pcm_register(dev, config, |
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SND_DMAENGINE_PCM_FLAG_NO_DT | |
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SND_DMAENGINE_PCM_FLAG_COMPAT); |
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} |
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EXPORT_SYMBOL_GPL(devm_spear_pcm_platform_register); |
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MODULE_AUTHOR("Rajeev Kumar <[email protected]>"); |
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MODULE_DESCRIPTION("SPEAr PCM DMA module"); |
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MODULE_LICENSE("GPL");
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