[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/soc/fsl/imx-pcm-dma.c b/src/kernel/linux/v4.14/sound/soc/fsl/imx-pcm-dma.c
new file mode 100644
index 0000000..314814d
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/soc/fsl/imx-pcm-dma.c
@@ -0,0 +1,57 @@
+/*
+ * imx-pcm-dma-mx2.c -- ALSA Soc Audio Layer
+ *
+ * Copyright 2009 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * This code is based on code copyrighted by Freescale,
+ * Liam Girdwood, Javier Martin and probably others.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+#include <linux/platform_device.h>
+#include <linux/dmaengine.h>
+#include <linux/types.h>
+#include <linux/module.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
+
+#include "imx-pcm.h"
+
+static bool filter(struct dma_chan *chan, void *param)
+{
+ if (!imx_dma_is_general_purpose(chan))
+ return false;
+
+ chan->private = param;
+
+ return true;
+}
+
+static const struct snd_dmaengine_pcm_config imx_dmaengine_pcm_config = {
+ .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
+ .compat_filter_fn = filter,
+};
+
+int imx_pcm_dma_init(struct platform_device *pdev, size_t size)
+{
+ struct snd_dmaengine_pcm_config *config;
+
+ config = devm_kzalloc(&pdev->dev,
+ sizeof(struct snd_dmaengine_pcm_config), GFP_KERNEL);
+ if (!config)
+ return -ENOMEM;
+ *config = imx_dmaengine_pcm_config;
+
+ return devm_snd_dmaengine_pcm_register(&pdev->dev,
+ config,
+ SND_DMAENGINE_PCM_FLAG_COMPAT);
+}
+EXPORT_SYMBOL_GPL(imx_pcm_dma_init);
+
+MODULE_LICENSE("GPL");