mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-12 13:55:32 +00:00
0f928c19b6
This is a part of conversion of Samsung platforms to use the custom DMA config for specifying DMA channel names, in addition to passing custom DMA device for the secondary CPU DAI's "PCM" component for some variants of the I2S controller. We also don't set the SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME any more as setting it wouldn't allow to specify DMA channels through the custom DMA config. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/*
|
|
* dmaengine.c - Samsung dmaengine wrapper
|
|
*
|
|
* Author: Mark Brown <broonie@linaro.org>
|
|
* Copyright 2013 Linaro
|
|
*
|
|
* 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/dmaengine_pcm.h>
|
|
#include <sound/soc.h>
|
|
|
|
#include "dma.h"
|
|
|
|
int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,
|
|
const char *tx, const char *rx,
|
|
struct device *dma_dev)
|
|
{
|
|
struct snd_dmaengine_pcm_config *pcm_conf;
|
|
|
|
pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL);
|
|
if (!pcm_conf)
|
|
return -ENOMEM;
|
|
|
|
pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
|
|
pcm_conf->compat_filter_fn = filter;
|
|
pcm_conf->dma_dev = dma_dev;
|
|
|
|
pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;
|
|
pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;
|
|
|
|
return devm_snd_dmaengine_pcm_register(dev, pcm_conf,
|
|
SND_DMAENGINE_PCM_FLAG_COMPAT);
|
|
}
|
|
EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);
|
|
|
|
MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");
|
|
MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");
|
|
MODULE_LICENSE("GPL");
|