Release 4.11 sound/soc/spear/spear_pcm.c
/*
* ALSA PCM interface for ST SPEAr Processors
*
* sound/soc/spear/spear_pcm.c
*
* Copyright (C) 2012 ST Microelectronics
* Rajeev Kumar<rajeevkumar.linux@gmail.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/module.h>
#include <linux/dmaengine.h>
#include <linux/platform_device.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/spear_dma.h>
#include "spear_pcm.h"
static const struct snd_pcm_hardware spear_pcm_hardware = {
.info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER |
SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
.buffer_bytes_max = 16 * 1024, /* max buffer size */
.period_bytes_min = 2 * 1024, /* 1 msec data minimum period size */
.period_bytes_max = 2 * 1024, /* maximum period size */
.periods_min = 1, /* min # periods */
.periods_max = 8, /* max # of periods */
.fifo_size = 0, /* fifo size in bytes */
};
static const struct snd_dmaengine_pcm_config spear_dmaengine_pcm_config = {
.pcm_hardware = &spear_pcm_hardware,
.prealloc_buffer_size = 16 * 1024,
};
int devm_spear_pcm_platform_register(struct device *dev,
struct snd_dmaengine_pcm_config *config,
bool (*filter)(struct dma_chan *chan, void *slave))
{
*config = spear_dmaengine_pcm_config;
config->compat_filter_fn = filter;
return devm_snd_dmaengine_pcm_register(dev, config,
SND_DMAENGINE_PCM_FLAG_NO_DT |
SND_DMAENGINE_PCM_FLAG_COMPAT);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Stephen Warren | 36 | 66.67% | 2 | 40.00% |
| Rajeev Kumar | 13 | 24.07% | 1 | 20.00% |
| Lars-Peter Clausen | 4 | 7.41% | 1 | 20.00% |
| Axel Lin | 1 | 1.85% | 1 | 20.00% |
| Total | 54 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL_GPL(devm_spear_pcm_platform_register);
MODULE_AUTHOR("Rajeev Kumar <rajeevkumar.linux@gmail.com>");
MODULE_DESCRIPTION("SPEAr PCM DMA module");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rajeev Kumar | 132 | 70.21% | 2 | 28.57% |
| Stephen Warren | 41 | 21.81% | 2 | 28.57% |
| Lars-Peter Clausen | 14 | 7.45% | 2 | 28.57% |
| Axel Lin | 1 | 0.53% | 1 | 14.29% |
| Total | 188 | 100.00% | 7 | 100.00% |
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