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 * Au12x0/Au1550 PSC ALSA ASoC audio support.
 * (c) 2007-2008 MSC Vertriebsges.m.b.H.,
 *    Manuel Lauss <manuel.lauss@gmail.com>
 * 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.
 * NOTE: all of these drivers can only work with a SINGLE instance
 *     of a PSC. Multiple independent audio devices are impossible
 *     with ASoC v1.

#ifndef _AU1X_PCM_H
#define _AU1X_PCM_H

extern struct snd_soc_dai au1xpsc_ac97_dai;
extern struct snd_soc_dai au1xpsc_i2s_dai;
extern struct snd_soc_platform au1xpsc_soc_platform;
extern struct snd_ac97_bus_ops soc_ac97_ops;

/* DBDMA helpers */
extern struct platform_device *au1xpsc_pcm_add(struct platform_device *pdev);
extern void au1xpsc_pcm_destroy(struct platform_device *dmapd);

struct au1xpsc_audio_data {
      void __iomem *mmio;

      unsigned long cfg;
      unsigned long rate;

      unsigned long pm[2];
      struct resource *ioarea;
      struct mutex lock;
      struct platform_device *dmapd;

#define PCM_TX    0
#define PCM_RX    1

#define SUBSTREAM_TYPE(substream) \
      ((substream)->stream == SNDRV_PCM_STREAM_PLAYBACK ? PCM_TX : PCM_RX)

/* easy access macros */
#define PSC_CTRL(x)     ((unsigned long)((x)->mmio) + PSC_CTRL_OFFSET)
#define PSC_SEL(x)      ((unsigned long)((x)->mmio) + PSC_SEL_OFFSET)
#define I2S_STAT(x)     ((unsigned long)((x)->mmio) + PSC_I2SSTAT_OFFSET)
#define I2S_CFG(x)      ((unsigned long)((x)->mmio) + PSC_I2SCFG_OFFSET)
#define I2S_PCR(x)      ((unsigned long)((x)->mmio) + PSC_I2SPCR_OFFSET)
#define AC97_CFG(x)     ((unsigned long)((x)->mmio) + PSC_AC97CFG_OFFSET)
#define AC97_CDC(x)     ((unsigned long)((x)->mmio) + PSC_AC97CDC_OFFSET)
#define AC97_EVNT(x)    ((unsigned long)((x)->mmio) + PSC_AC97EVNT_OFFSET)
#define AC97_PCR(x)     ((unsigned long)((x)->mmio) + PSC_AC97PCR_OFFSET)
#define AC97_RST(x)     ((unsigned long)((x)->mmio) + PSC_AC97RST_OFFSET)
#define AC97_STAT(x)    ((unsigned long)((x)->mmio) + PSC_AC97STAT_OFFSET)


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