[ALSA] Update AT91 ASoC driver for 2.6.19 kernel.

Changes were required to support latest AT91 header files.
Also updated to remove AT91RM9200-specific code in the ASoC
platform drivers to support the AT91SAM9260 and AT91SAM9261
chips, but no testing was performed on these chips.

Signed-off-by: Frank Mandarino <fmandarino@endrelia.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 71 insertions, 0 deletions

diff --git a/sound/soc/at91/at91-pcm.h b/sound/soc/at91/at91-pcm.h
new file mode 100644
index 000000000000..6c3b095725c8
--- /dev/null
+++ b/sound/soc/at91/at91-pcm.h
@@ -0,0 +1,71 @@
+/*
+ * at91-pcm.h - ALSA PCM interface for the Atmel AT91 SoC
+ *
+ * Author:      Frank Mandarino <fmandarino@endrelia.com>
+ *              Endrelia Technologies Inc.
+ * Created:     Mar 3, 2006
+ *
+ * Based on pxa2xx-pcm.h by:
+ *
+ * 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.
+ */
+
+#include <asm/arch/hardware.h>
+
+struct at91_ssc_periph {
+        void __iomem    *base;
+        u32             pid;
+};
+
+
+/*
+ * Registers and status bits that are required by the PCM driver.
+ */
+struct at91_pdc_regs {
+        unsigned int    xpr;            /* PDC recv/trans pointer */
+        unsigned int    xcr;            /* PDC recv/trans counter */
+        unsigned int    xnpr;           /* PDC next recv/trans pointer */
+        unsigned int    xncr;           /* PDC next recv/trans counter */
+        unsigned int    ptcr;           /* PDC transfer control */
+};
+
+struct at91_ssc_mask {
+        u32     ssc_enable;             /* SSC recv/trans enable */
+        u32     ssc_disable;            /* SSC recv/trans disable */
+        u32     ssc_endx;               /* SSC ENDTX or ENDRX */
+        u32     ssc_endbuf;             /* SSC TXBUFE or RXBUFF */
+        u32     pdc_enable;             /* PDC recv/trans enable */
+        u32     pdc_disable;            /* PDC recv/trans disable */
+};
+
+
+/*
+ * This structure, shared between the PCM driver and the interface,
+ * contains all information required by the PCM driver to perform the
+ * PDC DMA operation.  All fields except dma_intr_handler() are initialized
+ * by the interface.  The dms_intr_handler() pointer is set by the PCM
+ * driver and called by the interface SSC interrupt handler if it is
+ * non-NULL.
+ */
+struct at91_pcm_dma_params {
+        char *name;                     /* stream identifier */
+        int pdc_xfer_size;              /* PDC counter increment in bytes */
+        void __iomem *ssc_base;         /* SSC base address */
+        struct at91_pdc_regs *pdc; /* PDC receive or transmit registers */
+        struct at91_ssc_mask *mask;/* SSC & PDC status bits */
+        struct snd_pcm_substream *substream;
+        void (*dma_intr_handler)(u32, struct snd_pcm_substream *);
+};
+
+extern struct snd_soc_cpu_dai at91_i2s_dai[3];
+extern struct snd_soc_platform at91_soc_platform;
+
+
+#define at91_ssc_read(a)        ((unsigned long) __raw_readl(a))
+#define at91_ssc_write(a,v)     __raw_writel((v),(a))