1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // dmaengine.c - Samsung dmaengine wrapper 4 // 5 // Author: Mark Brown <broonie@linaro.org> 6 // Copyright 2013 Linaro 7 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 17 int 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 } 37 EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register); 38 39 MODULE_AUTHOR("Mark Brown <broonie@linaro.org>"); 40 MODULE_DESCRIPTION("Samsung dmaengine ASoC driver"); 41 MODULE_LICENSE("GPL"); 42