Contributors: 6
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Ryan Mallon |
110 |
56.99% |
2 |
22.22% |
| Mika Westerberg |
44 |
22.80% |
1 |
11.11% |
| Lars-Peter Clausen |
18 |
9.33% |
3 |
33.33% |
| Liam Girdwood |
12 |
6.22% |
1 |
11.11% |
| Stephen Warren |
8 |
4.15% |
1 |
11.11% |
| Arnd Bergmann |
1 |
0.52% |
1 |
11.11% |
| Total |
193 |
|
9 |
|
/*
* linux/sound/arm/ep93xx-pcm.c - EP93xx ALSA PCM interface
*
* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
* Copyright (C) 2006 Applied Data Systems
*
* Rewritten for the SoC audio subsystem (Based on PXA2xx code):
* Copyright (c) 2008 Ryan Mallon
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dmaengine.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>
#include <linux/platform_data/dma-ep93xx.h>
#include "ep93xx-pcm.h"
static const struct snd_pcm_hardware ep93xx_pcm_hardware = {
.info = (SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER),
.buffer_bytes_max = 131072,
.period_bytes_min = 32,
.period_bytes_max = 32768,
.periods_min = 1,
.periods_max = 32,
.fifo_size = 32,
};
static bool ep93xx_pcm_dma_filter(struct dma_chan *chan, void *filter_param)
{
struct ep93xx_dma_data *data = filter_param;
if (data->direction == ep93xx_dma_chan_direction(chan)) {
chan->private = data;
return true;
}
return false;
}
static const struct snd_dmaengine_pcm_config ep93xx_dmaengine_pcm_config = {
.pcm_hardware = &ep93xx_pcm_hardware,
.compat_filter_fn = ep93xx_pcm_dma_filter,
.prealloc_buffer_size = 131072,
};
int devm_ep93xx_pcm_platform_register(struct device *dev)
{
return devm_snd_dmaengine_pcm_register(dev,
&ep93xx_dmaengine_pcm_config,
SND_DMAENGINE_PCM_FLAG_NO_DT |
SND_DMAENGINE_PCM_FLAG_COMPAT);
}
EXPORT_SYMBOL_GPL(devm_ep93xx_pcm_platform_register);
MODULE_AUTHOR("Ryan Mallon");
MODULE_DESCRIPTION("EP93xx ALSA PCM interface");
MODULE_LICENSE("GPL");