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4a161d235b
Audio for Au12x0/Au1550 PSCs in AC97 and I2S mode, for ASoC v1 framework. - DBDMA, AC97 and I2S drivers - sample AC97 machine code (Db1200) Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
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* Au12x0/Au1550 PSC ALSA ASoC audio support.
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*
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* (c) 2007-2008 MSC Vertriebsges.m.b.H.,
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* Manuel Lauss <mano@roarinelk.homelinux.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* NOTE: all of these drivers can only work with a SINGLE instance
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* of a PSC. Multiple independent audio devices are impossible
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* with ASoC v1.
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*/
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#ifndef _AU1X_PCM_H
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#define _AU1X_PCM_H
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extern struct snd_soc_dai au1xpsc_ac97_dai;
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extern struct snd_soc_dai au1xpsc_i2s_dai;
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extern struct snd_soc_platform au1xpsc_soc_platform;
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extern struct snd_ac97_bus_ops soc_ac97_ops;
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struct au1xpsc_audio_data {
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void __iomem *mmio;
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unsigned long cfg;
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unsigned long rate;
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unsigned long pm[2];
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struct resource *ioarea;
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};
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#define PCM_TX 0
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#define PCM_RX 1
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#define SUBSTREAM_TYPE(substream) \
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((substream)->stream == SNDRV_PCM_STREAM_PLAYBACK ? PCM_TX : PCM_RX)
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/* easy access macros */
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#define PSC_CTRL(x) ((unsigned long)((x)->mmio) + PSC_CTRL_OFFSET)
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#define PSC_SEL(x) ((unsigned long)((x)->mmio) + PSC_SEL_OFFSET)
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#define I2S_STAT(x) ((unsigned long)((x)->mmio) + PSC_I2SSTAT_OFFSET)
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#define I2S_CFG(x) ((unsigned long)((x)->mmio) + PSC_I2SCFG_OFFSET)
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#define I2S_PCR(x) ((unsigned long)((x)->mmio) + PSC_I2SPCR_OFFSET)
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#define AC97_CFG(x) ((unsigned long)((x)->mmio) + PSC_AC97CFG_OFFSET)
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#define AC97_CDC(x) ((unsigned long)((x)->mmio) + PSC_AC97CDC_OFFSET)
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#define AC97_EVNT(x) ((unsigned long)((x)->mmio) + PSC_AC97EVNT_OFFSET)
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#define AC97_PCR(x) ((unsigned long)((x)->mmio) + PSC_AC97PCR_OFFSET)
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#define AC97_RST(x) ((unsigned long)((x)->mmio) + PSC_AC97RST_OFFSET)
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#define AC97_STAT(x) ((unsigned long)((x)->mmio) + PSC_AC97STAT_OFFSET)
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#endif
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