[ALSA] ASoC Samsung S3C24xx audio DMA

This patch by Ben Dooks from Simtec Electronics adds ASoC audio DMA
support for the Samsung S3C24xx CPU.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

sound/soc/s3c24xx/s3c24xx-pcm.h

+/*
+ *  s3c24xx-pcm.h --
+ *
+ *  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.
+ *
+ *  ALSA PCM interface for the Samsung S3C24xx CPU
+ */
+
+#ifndef _S3C24XX_PCM_H
+#define _S3C24XX_PCM_H
+
+#define ST_RUNNING		(1<<0)
+#define ST_OPENED		(1<<1)
+
+struct s3c24xx_pcm_dma_params {
+	struct s3c2410_dma_client *client;			/* stream identifier */
+	int channel;						/* Channel ID */
+	dma_addr_t dma_addr;
+};
+
+#define S3C24XX_DAI_I2S			0
+
+extern struct snd_soc_cpu_dai s3c24xx_i2s_dai;
+
+/* platform data */
+extern struct snd_soc_platform s3c24xx_soc_platform;
+extern struct snd_ac97_bus_ops s3c24xx_ac97_ops;
+
+#endif