30 строки
963 B
C
30 строки
963 B
C
/*
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* linux/sound/arm/pxa2xx-pcm.h -- ALSA PCM interface for the Intel PXA2xx chip
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*
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* Author: Nicolas Pitre
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* Created: Nov 30, 2004
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* Copyright: MontaVista Software, Inc.
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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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struct pxa2xx_pcm_dma_params {
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char *name; /* stream identifier */
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u32 dcmd; /* DMA descriptor dcmd field */
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volatile u32 *drcmr; /* the DMA request channel to use */
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u32 dev_addr; /* device physical address for DMA */
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};
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struct pxa2xx_pcm_client {
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struct pxa2xx_pcm_dma_params *playback_params;
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struct pxa2xx_pcm_dma_params *capture_params;
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int (*startup)(struct snd_pcm_substream *);
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void (*shutdown)(struct snd_pcm_substream *);
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int (*prepare)(struct snd_pcm_substream *);
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};
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extern int pxa2xx_pcm_new(struct snd_card *, struct pxa2xx_pcm_client *, struct snd_pcm **);
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