[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/arm/pxa2xx-pcm.c b/src/kernel/linux/v4.14/sound/arm/pxa2xx-pcm.c
new file mode 100644
index 0000000..1c6f4b4
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/arm/pxa2xx-pcm.c
@@ -0,0 +1,129 @@
+/*
+ * linux/sound/arm/pxa2xx-pcm.c -- ALSA PCM interface for the Intel PXA2xx chip
+ *
+ * Author: Nicolas Pitre
+ * Created: Nov 30, 2004
+ * Copyright: (C) 2004 MontaVista Software, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
+
+#include <mach/dma.h>
+
+#include <sound/core.h>
+#include <sound/pxa2xx-lib.h>
+#include <sound/dmaengine_pcm.h>
+
+#include "pxa2xx-pcm.h"
+
+static int pxa2xx_pcm_prepare(struct snd_pcm_substream *substream)
+{
+ struct pxa2xx_pcm_client *client = substream->private_data;
+
+ __pxa2xx_pcm_prepare(substream);
+
+ return client->prepare(substream);
+}
+
+static int pxa2xx_pcm_open(struct snd_pcm_substream *substream)
+{
+ struct pxa2xx_pcm_client *client = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct pxa2xx_runtime_data *rtd;
+ int ret;
+
+ ret = __pxa2xx_pcm_open(substream);
+ if (ret)
+ goto out;
+
+ rtd = runtime->private_data;
+
+ rtd->params = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
+ client->playback_params : client->capture_params;
+
+ ret = client->startup(substream);
+ if (!ret)
+ goto err2;
+
+ return 0;
+
+ err2:
+ __pxa2xx_pcm_close(substream);
+ out:
+ return ret;
+}
+
+static int pxa2xx_pcm_close(struct snd_pcm_substream *substream)
+{
+ struct pxa2xx_pcm_client *client = substream->private_data;
+
+ client->shutdown(substream);
+
+ return __pxa2xx_pcm_close(substream);
+}
+
+static const struct snd_pcm_ops pxa2xx_pcm_ops = {
+ .open = pxa2xx_pcm_open,
+ .close = pxa2xx_pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = __pxa2xx_pcm_hw_params,
+ .hw_free = __pxa2xx_pcm_hw_free,
+ .prepare = pxa2xx_pcm_prepare,
+ .trigger = pxa2xx_pcm_trigger,
+ .pointer = pxa2xx_pcm_pointer,
+ .mmap = pxa2xx_pcm_mmap,
+};
+
+int pxa2xx_pcm_new(struct snd_card *card, struct pxa2xx_pcm_client *client,
+ struct snd_pcm **rpcm)
+{
+ struct snd_pcm *pcm;
+ int play = client->playback_params ? 1 : 0;
+ int capt = client->capture_params ? 1 : 0;
+ int ret;
+
+ ret = snd_pcm_new(card, "PXA2xx-PCM", 0, play, capt, &pcm);
+ if (ret)
+ goto out;
+
+ pcm->private_data = client;
+ pcm->private_free = pxa2xx_pcm_free_dma_buffers;
+
+ ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
+ if (ret)
+ goto out;
+
+ if (play) {
+ int stream = SNDRV_PCM_STREAM_PLAYBACK;
+ snd_pcm_set_ops(pcm, stream, &pxa2xx_pcm_ops);
+ ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream);
+ if (ret)
+ goto out;
+ }
+ if (capt) {
+ int stream = SNDRV_PCM_STREAM_CAPTURE;
+ snd_pcm_set_ops(pcm, stream, &pxa2xx_pcm_ops);
+ ret = pxa2xx_pcm_preallocate_dma_buffer(pcm, stream);
+ if (ret)
+ goto out;
+ }
+
+ if (rpcm)
+ *rpcm = pcm;
+ ret = 0;
+
+ out:
+ return ret;
+}
+
+EXPORT_SYMBOL(pxa2xx_pcm_new);
+
+MODULE_AUTHOR("Nicolas Pitre");
+MODULE_DESCRIPTION("Intel PXA2xx PCM DMA module");
+MODULE_LICENSE("GPL");