[ALSA] Add ARM PXA2xx AC97 driver

Documentation,ARM,/arm/Makefile,ARM PXA2XX driver
Added ARM PXA2xx AC97 driver by Nicolas Pitre
(moved from alsa-driver tree).

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 29 insertions, 0 deletions

diff --git a/sound/arm/pxa2xx-pcm.h b/sound/arm/pxa2xx-pcm.h
new file mode 100644
index 000000000000..43517597cab9
--- /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 **);
+