diff options
Diffstat (limited to 'sound/soc/samsung/dmaengine.c')
| -rw-r--r-- | sound/soc/samsung/dmaengine.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/sound/soc/samsung/dmaengine.c b/sound/soc/samsung/dmaengine.c new file mode 100644 index 000000000..2802789a3 --- /dev/null +++ b/sound/soc/samsung/dmaengine.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// dmaengine.c - Samsung dmaengine wrapper +// +// Author: Mark Brown <broonie@linaro.org> +// Copyright 2013 Linaro + +#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"); |