mirror of https://gitee.com/openkylin/linux.git
30 lines
943 B
C
30 lines
943 B
C
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/*
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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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typedef struct {
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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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} pxa2xx_pcm_dma_params_t;
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typedef struct {
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pxa2xx_pcm_dma_params_t *playback_params;
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pxa2xx_pcm_dma_params_t *capture_params;
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int (*startup)(snd_pcm_substream_t *);
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void (*shutdown)(snd_pcm_substream_t *);
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int (*prepare)(snd_pcm_substream_t *);
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} pxa2xx_pcm_client_t;
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extern int pxa2xx_pcm_new(snd_card_t *, pxa2xx_pcm_client_t *, snd_pcm_t **);
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