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 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 24/* DBDMA helpers */ 25extern struct platform_device *au1xpsc_pcm_add(struct platform_device *pdev); 26extern void au1xpsc_pcm_destroy(struct platform_device *dmapd); 27 28struct au1xpsc_audio_data { 29 void __iomem *mmio; 30 31 unsigned long cfg; 32 unsigned long rate; 33 34 unsigned long pm[2]; 35 struct mutex lock; 36 struct platform_device *dmapd; 37}; 38 39#define PCM_TX 0 40#define PCM_RX 1 41 42#define SUBSTREAM_TYPE(substream) \ 43 ((substream)->stream == SNDRV_PCM_STREAM_PLAYBACK ? PCM_TX : PCM_RX) 44 45/* easy access macros */ 46#define PSC_CTRL(x) ((unsigned long)((x)->mmio) + PSC_CTRL_OFFSET) 47#define PSC_SEL(x) ((unsigned long)((x)->mmio) + PSC_SEL_OFFSET) 48#define I2S_STAT(x) ((unsigned long)((x)->mmio) + PSC_I2SSTAT_OFFSET) 49#define I2S_CFG(x) ((unsigned long)((x)->mmio) + PSC_I2SCFG_OFFSET) 50#define I2S_PCR(x) ((unsigned long)((x)->mmio) + PSC_I2SPCR_OFFSET) 51#define AC97_CFG(x) ((unsigned long)((x)->mmio) + PSC_AC97CFG_OFFSET) 52#define AC97_CDC(x) ((unsigned long)((x)->mmio) + PSC_AC97CDC_OFFSET) 53#define AC97_EVNT(x) ((unsigned long)((x)->mmio) + PSC_AC97EVNT_OFFSET) 54#define AC97_PCR(x) ((unsigned long)((x)->mmio) + PSC_AC97PCR_OFFSET) 55#define AC97_RST(x) ((unsigned long)((x)->mmio) + PSC_AC97RST_OFFSET) 56#define AC97_STAT(x) ((unsigned long)((x)->mmio) + PSC_AC97STAT_OFFSET) 57 58#endif 59