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Diffstat (limited to '')
| -rw-r--r-- | sound/soc/samsung/dmaengine.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/sound/soc/samsung/dmaengine.c b/sound/soc/samsung/dmaengine.c new file mode 100644 index 000000000..9104c98de --- /dev/null +++ b/sound/soc/samsung/dmaengine.c @@ -0,0 +1,53 @@ +/* + * 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) +{ + unsigned int flags = SND_DMAENGINE_PCM_FLAG_COMPAT; + 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; + + if (dev->of_node) { + pcm_conf->chan_names[SNDRV_PCM_STREAM_PLAYBACK] = tx; + pcm_conf->chan_names[SNDRV_PCM_STREAM_CAPTURE] = rx; + } else { + flags |= SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME; + } + + return devm_snd_dmaengine_pcm_register(dev, pcm_conf, flags); +} +EXPORT_SYMBOL_GPL(samsung_asoc_dma_platform_register); + +MODULE_AUTHOR("Mark Brown <broonie@linaro.org>"); +MODULE_DESCRIPTION("Samsung dmaengine ASoC driver"); +MODULE_LICENSE("GPL"); |