| 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, size: 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, config: 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 |