sound/soc/au1x/psc.h

   1 /*
   2  * Au12x0/Au1550 PSC ALSA ASoC audio support.
   3  *
   4  * (c) 2007-2008 MSC Vertriebsges.m.b.H.,
   5  *      Manuel Lauss <manuel.lauss@gmail.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  * NOTE: all of these drivers can only work with a SINGLE instance
  12  *       of a PSC. Multiple independent audio devices are impossible
  13  *       with ASoC v1.
  14  */
  15
  16 #ifndef _AU1X_PCM_H
  17 #define _AU1X_PCM_H
  18
  19 extern struct snd_soc_dai au1xpsc_ac97_dai;
  20 extern struct snd_soc_dai au1xpsc_i2s_dai;
  21 extern struct snd_soc_platform au1xpsc_soc_platform;
  22 extern struct snd_ac97_bus_ops soc_ac97_ops;
  23
  24 /* DBDMA helpers */
  25 extern struct platform_device *au1xpsc_pcm_add(struct platform_device *pdev);
  26 extern void au1xpsc_pcm_destroy(struct platform_device *dmapd);
  27
  28 struct au1xpsc_audio_data {
  29         void __iomem *mmio;
  30
  31         unsigned long cfg;
  32         unsigned long rate;
  33
  34         unsigned long pm[2];
  35         struct resource *ioarea;
  36         struct mutex lock;
  37         struct platform_device *dmapd;
  38 };
  39
  40 #define PCM_TX  0
  41 #define PCM_RX  1
  42
  43 #define SUBSTREAM_TYPE(substream) \
  44         ((substream)->stream == SNDRV_PCM_STREAM_PLAYBACK ? PCM_TX : PCM_RX)
  45
  46 /* easy access macros */
  47 #define PSC_CTRL(x)     ((unsigned long)((x)->mmio) + PSC_CTRL_OFFSET)
  48 #define PSC_SEL(x)      ((unsigned long)((x)->mmio) + PSC_SEL_OFFSET)
  49 #define I2S_STAT(x)     ((unsigned long)((x)->mmio) + PSC_I2SSTAT_OFFSET)
  50 #define I2S_CFG(x)      ((unsigned long)((x)->mmio) + PSC_I2SCFG_OFFSET)
  51 #define I2S_PCR(x)      ((unsigned long)((x)->mmio) + PSC_I2SPCR_OFFSET)
  52 #define AC97_CFG(x)     ((unsigned long)((x)->mmio) + PSC_AC97CFG_OFFSET)
  53 #define AC97_CDC(x)     ((unsigned long)((x)->mmio) + PSC_AC97CDC_OFFSET)
  54 #define AC97_EVNT(x)    ((unsigned long)((x)->mmio) + PSC_AC97EVNT_OFFSET)
  55 #define AC97_PCR(x)     ((unsigned long)((x)->mmio) + PSC_AC97PCR_OFFSET)
  56 #define AC97_RST(x)     ((unsigned long)((x)->mmio) + PSC_AC97RST_OFFSET)
  57 #define AC97_STAT(x)    ((unsigned long)((x)->mmio) + PSC_AC97STAT_OFFSET)
  58
  59 #endif