https://github.com/torvalds/linux
Raw File
Tip revision: b2776bf7149bddd1f4161f14f79520f17fc1d71d authored by Linus Torvalds on 07 December 2014, 22:21:05 UTC
Linux 3.18
Tip revision: b2776bf
pxa2xx-pcm.h
/*
 * linux/sound/arm/pxa2xx-pcm.h -- ALSA PCM interface for the Intel PXA2xx chip
 *
 * Author:	Nicolas Pitre
 * Created:	Nov 30, 2004
 * Copyright:	MontaVista Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

struct pxa2xx_runtime_data {
	int dma_ch;
	struct snd_dmaengine_dai_dma_data *params;
	struct pxa_dma_desc *dma_desc_array;
	dma_addr_t dma_desc_array_phys;
};

struct pxa2xx_pcm_client {
	struct snd_dmaengine_dai_dma_data *playback_params;
	struct snd_dmaengine_dai_dma_data *capture_params;
	int (*startup)(struct snd_pcm_substream *);
	void (*shutdown)(struct snd_pcm_substream *);
	int (*prepare)(struct snd_pcm_substream *);
};

extern int pxa2xx_pcm_new(struct snd_card *, struct pxa2xx_pcm_client *, struct snd_pcm **);

back to top