LXR linux/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 <mano@roarinelk.homelinux.net>
   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
  19extern struct snd_soc_dai au1xpsc_ac97_dai;
  20extern struct snd_soc_dai au1xpsc_i2s_dai;
  21extern struct snd_soc_platform au1xpsc_soc_platform;
  22extern struct snd_ac97_bus_ops soc_ac97_ops;
  23
  24struct au1xpsc_audio_data {
  25        void __iomem *mmio;
  26
  27        unsigned long cfg;
  28        unsigned long rate;
  29
  30        unsigned long pm[2];
  31        struct resource *ioarea;
  32        struct mutex lock;
  33};
  34
  35#define PCM_TX  0
  36#define PCM_RX  1
  37
  38#define SUBSTREAM_TYPE(substream) \
  39        ((substream)->stream == SNDRV_PCM_STREAM_PLAYBACK ? PCM_TX : PCM_RX)
  40
  41/* easy access macros */
  42#define PSC_CTRL(x)     ((unsigned long)((x)->mmio) + PSC_CTRL_OFFSET)
  43#define PSC_SEL(x)      ((unsigned long)((x)->mmio) + PSC_SEL_OFFSET)
  44#define I2S_STAT(x)     ((unsigned long)((x)->mmio) + PSC_I2SSTAT_OFFSET)
  45#define I2S_CFG(x)      ((unsigned long)((x)->mmio) + PSC_I2SCFG_OFFSET)
  46#define I2S_PCR(x)      ((unsigned long)((x)->mmio) + PSC_I2SPCR_OFFSET)
  47#define AC97_CFG(x)     ((unsigned long)((x)->mmio) + PSC_AC97CFG_OFFSET)
  48#define AC97_CDC(x)     ((unsigned long)((x)->mmio) + PSC_AC97CDC_OFFSET)
  49#define AC97_EVNT(x)    ((unsigned long)((x)->mmio) + PSC_AC97EVNT_OFFSET)
  50#define AC97_PCR(x)     ((unsigned long)((x)->mmio) + PSC_AC97PCR_OFFSET)
  51#define AC97_RST(x)     ((unsigned long)((x)->mmio) + PSC_AC97RST_OFFSET)
  52#define AC97_STAT(x)    ((unsigned long)((x)->mmio) + PSC_AC97STAT_OFFSET)
  53
  54#endif
  55