42 lines · c
1// SPDX-License-Identifier: GPL-2.02//3// dmaengine.c - Samsung dmaengine wrapper4//5// Author: Mark Brown <broonie@linaro.org>6// Copyright 2013 Linaro7 8#include <linux/module.h>9#include <sound/core.h>10#include <sound/pcm.h>11#include <sound/pcm_params.h>12#include <sound/dmaengine_pcm.h>13#include <sound/soc.h>14 15#include "dma.h"16 17int samsung_asoc_dma_platform_register(struct device *dev, dma_filter_fn filter,18 const char *tx, const char *rx,19 struct device *dma_dev)20{21 struct snd_dmaengine_pcm_config *pcm_conf;22 23 pcm_conf = devm_kzalloc(dev, sizeof(*pcm_conf), GFP_KERNEL);24 if (!pcm_conf)25 return -ENOMEM;26 27 pcm_conf->prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;28 pcm_conf->compat_filter_fn = filter;29 pcm_conf->dma_dev = dma_dev;30 31 pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx;32 pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx;33 34 return devm_snd_dmaengine_pcm_register(dev, pcm_conf,35 SND_DMAENGINE_PCM_FLAG_COMPAT);36}37EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register);38 39MODULE_AUTHOR("Mark Brown <broonie@linaro.org>");40MODULE_DESCRIPTION("Samsung dmaengine ASoC driver");41MODULE_LICENSE("GPL");42