1 files changed, 49 insertions, 0 deletions
diff --git a/sound/soc/sprd/dai/sprd-pcm.h b/sound/soc/sprd/dai/sprd-pcm.h
new file mode 100644
index 00000000..149081e1
--- /dev/null
+++ b/sound/soc/sprd/dai/sprd-pcm.h
@@ -0,0 +1,49 @@
+/*
+ * sound/soc/sprd/dai/sprd-pcm.h
+ *
+ * SpreadTrum DMA for the pcm stream.
+ *
+ * Copyright (C) 2012 SpreadTrum Ltd.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+#ifndef __SPRD_PCM_H
+#define __SPRD_PCM_H
+
+#include <soc/sprd/dma.h>
+
+#define VBC_PCM_FORMATS			SNDRV_PCM_FMTBIT_S16_LE
+#define VBC_FIFO_FRAME_NUM	  	(160)
+#define VBC_BUFFER_BYTES_MAX 		(128 * 1024)
+
+#define I2S_BUFFER_BYTES_MAX 		(64 * 1024)
+
+#define AUDIO_BUFFER_BYTES_MAX 		(VBC_BUFFER_BYTES_MAX + I2S_BUFFER_BYTES_MAX)
+
+struct sprd_pcm_dma_params {
+	char *name;		/* stream identifier */
+	int channels[2];	/* channel id */
+	int irq_type;		/* dma interrupt type */
+	struct sci_dma_cfg desc;	/* dma description struct */
+	u32 dev_paddr[2];	/* device physical address for DMA */
+};
+
+typedef struct sci_dma_cfg sprd_dma_desc;
+
+static inline int sprd_pcm_dma_get_addr(int dma_ch,
+					struct snd_pcm_substream *substream)
+{
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		return sci_dma_get_src_addr(dma_ch);
+	else
+		return sci_dma_get_dst_addr(dma_ch);
+}
+
+#endif /* __SPRD_PCM_H */