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2c484df0 TI |
1 | /* |
2 | * linux/sound/arm/pxa2xx-pcm.h -- ALSA PCM interface for the Intel PXA2xx chip | |
3 | * | |
4 | * Author: Nicolas Pitre | |
5 | * Created: Nov 30, 2004 | |
6 | * Copyright: MontaVista Software, Inc. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | typedef struct { | |
14 | char *name; /* stream identifier */ | |
15 | u32 dcmd; /* DMA descriptor dcmd field */ | |
16 | volatile u32 *drcmr; /* the DMA request channel to use */ | |
17 | u32 dev_addr; /* device physical address for DMA */ | |
18 | } pxa2xx_pcm_dma_params_t; | |
19 | ||
20 | typedef struct { | |
21 | pxa2xx_pcm_dma_params_t *playback_params; | |
22 | pxa2xx_pcm_dma_params_t *capture_params; | |
23 | int (*startup)(snd_pcm_substream_t *); | |
24 | void (*shutdown)(snd_pcm_substream_t *); | |
25 | int (*prepare)(snd_pcm_substream_t *); | |
26 | } pxa2xx_pcm_client_t; | |
27 | ||
28 | extern int pxa2xx_pcm_new(snd_card_t *, pxa2xx_pcm_client_t *, snd_pcm_t **); | |
29 |