[ALSA] Add ARM PXA2xx AC97 driver

[pandora-kernel.git] / sound / arm / pxa2xx-pcm.h

diff --git a/sound/arm/pxa2xx-pcm.h b/sound/arm/pxa2xx-pcm.h
new file mode 100644 (file)
index 0000000..4351759
--- /dev/null
+++ b/sound/arm/pxa2xx-pcm.h
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ */
+
+typedef struct {
+       char *name;                     /* stream identifier */
+       u32 dcmd;                       /* DMA descriptor dcmd field */
+       volatile u32 *drcmr;            /* the DMA request channel to use */
+       u32 dev_addr;                   /* device physical address for DMA */
+} pxa2xx_pcm_dma_params_t;
+       
+typedef struct {
+       pxa2xx_pcm_dma_params_t *playback_params;
+       pxa2xx_pcm_dma_params_t *capture_params;
+       int (*startup)(snd_pcm_substream_t *);
+       void (*shutdown)(snd_pcm_substream_t *);
+       int (*prepare)(snd_pcm_substream_t *);
+} pxa2xx_pcm_client_t;
+
+extern int pxa2xx_pcm_new(snd_card_t *, pxa2xx_pcm_client_t *, snd_pcm_t **);
+