Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / samsung / dmaengine.c

diff --git a/kernel/sound/soc/samsung/dmaengine.c b/kernel/sound/soc/samsung/dmaengine.c
new file mode 100644 (file)
index 0000000..506f5bf
--- /dev/null
+++ b/kernel/sound/soc/samsung/dmaengine.c
@@ -0,0 +1,81 @@
+/*
+ * 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 <linux/amba/pl08x.h>
+#include <linux/platform_data/dma-s3c24xx.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+
+#include "dma.h"
+
+#ifdef CONFIG_ARCH_S3C64XX
+#define filter_fn pl08x_filter_id
+#elif defined(CONFIG_ARCH_S3C24XX)
+#define filter_fn s3c24xx_dma_filter
+#else
+#define filter_fn NULL
+#endif
+
+static const struct snd_dmaengine_pcm_config samsung_dmaengine_pcm_config = {
+       .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
+       .compat_filter_fn = filter_fn,
+};
+
+void samsung_asoc_init_dma_data(struct snd_soc_dai *dai,
+                               struct s3c_dma_params *playback,
+                               struct s3c_dma_params *capture)
+{
+       struct snd_dmaengine_dai_dma_data *playback_data = NULL;
+       struct snd_dmaengine_dai_dma_data *capture_data = NULL;
+
+       if (playback) {
+               playback_data = &playback->dma_data;
+               playback_data->filter_data = (void *)playback->channel;
+               playback_data->chan_name = playback->ch_name;
+               playback_data->addr = playback->dma_addr;
+               playback_data->addr_width = playback->dma_size;
+       }
+       if (capture) {
+               capture_data = &capture->dma_data;
+               capture_data->filter_data = (void *)capture->channel;
+               capture_data->chan_name = capture->ch_name;
+               capture_data->addr = capture->dma_addr;
+               capture_data->addr_width = capture->dma_size;
+       }
+
+       snd_soc_dai_init_dma_data(dai, playback_data, capture_data);
+}
+EXPORT_SYMBOL_GPL(samsung_asoc_init_dma_data);
+
+int samsung_asoc_dma_platform_register(struct device *dev)
+{
+       return devm_snd_dmaengine_pcm_register(dev,
+                       &samsung_dmaengine_pcm_config,
+                       SND_DMAENGINE_PCM_FLAG_CUSTOM_CHANNEL_NAME |
+                       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");