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https://github.com/edk2-porting/linux-next.git
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b3c70c9ea6
This patch adds ASoC support for the AC97 and I2S controllers on the old Au1000/Au1500/Au1100 chips, AC97 Tested on a Db1500. I2S untested since none of the boards actually have an I2S codec wired up (just test pins). Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
/*
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* Alchemy ALSA ASoC audio support.
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*
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* (c) 2007-2011 MSC Vertriebsges.m.b.H.,
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* Manuel Lauss <manuel.lauss@gmail.com>
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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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*/
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#ifndef _AU1X_PCM_H
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#define _AU1X_PCM_H
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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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/* PSC/DBDMA helpers */
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extern struct platform_device *au1xpsc_pcm_add(struct platform_device *pdev);
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extern void au1xpsc_pcm_destroy(struct platform_device *dmapd);
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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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struct snd_soc_dai_driver dai_drv;
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unsigned long pm[2];
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struct mutex lock;
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int dmaids[2];
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struct platform_device *dmapd;
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};
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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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