ASoC: Add SuperH FSI driver support for ALSA

This driver is very simple.
It support playback only now.
This patch is tested by ms7724se board.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

include/sound/sh_fsi.h

@@ -0,0 +1,83 @@
+#ifndef __SOUND_FSI_H
+#define __SOUND_FSI_H
+
+/*
+ * Fifo-attached Serial Interface (FSI) support for SH7724
+ *
+ * Copyright (C) 2009 Renesas Solutions Corp.
+ * Kuninori Morimoto <morimoto.kuninori@renesas.com>
+ *
+ * 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.
+ */
+
+/* flags format
+
+ * 0xABCDEEFF
+ *
+ * A:  channel size for TDM (input)
+ * B:  channel size for TDM (ooutput)
+ * C:  inversion
+ * D:  mode
+ * E:  input format
+ * F:  output format
+ */
+
+#include <linux/clk.h>
+#include <sound/soc.h>
+
+/* TDM channel */
+#define SH_FSI_SET_CH_I(x)	((x & 0xF) << 28)
+#define SH_FSI_SET_CH_O(x)	((x & 0xF) << 24)
+
+#define SH_FSI_CH_IMASK		0xF0000000
+#define SH_FSI_CH_OMASK		0x0F000000
+#define SH_FSI_GET_CH_I(x)	((x & SH_FSI_CH_IMASK) >> 28)
+#define SH_FSI_GET_CH_O(x)	((x & SH_FSI_CH_OMASK) >> 24)
+
+/* clock inversion */
+#define SH_FSI_INVERSION_MASK	0x00F00000
+#define SH_FSI_LRM_INV		(1 << 20)
+#define SH_FSI_BRM_INV		(1 << 21)
+#define SH_FSI_LRS_INV		(1 << 22)
+#define SH_FSI_BRS_INV		(1 << 23)
+
+/* mode */
+#define SH_FSI_MODE_MASK	0x000F0000
+#define SH_FSI_IN_SLAVE_MODE	(1 << 16)  /* default master mode */
+#define SH_FSI_OUT_SLAVE_MODE	(1 << 17)  /* default master mode */
+
+/* DI format */
+#define SH_FSI_FMT_MASK		0x000000FF
+#define SH_FSI_IFMT(x)		(((SH_FSI_FMT_ ## x) & SH_FSI_FMT_MASK) << 8)
+#define SH_FSI_OFMT(x)		(((SH_FSI_FMT_ ## x) & SH_FSI_FMT_MASK) << 0)
+#define SH_FSI_GET_IFMT(x)	((x >> 8) & SH_FSI_FMT_MASK)
+#define SH_FSI_GET_OFMT(x)	((x >> 0) & SH_FSI_FMT_MASK)
+
+#define SH_FSI_FMT_MONO		(1 << 0)
+#define SH_FSI_FMT_MONO_DELAY	(1 << 1)
+#define SH_FSI_FMT_PCM		(1 << 2)
+#define SH_FSI_FMT_I2S		(1 << 3)
+#define SH_FSI_FMT_TDM		(1 << 4)
+#define SH_FSI_FMT_TDM_DELAY	(1 << 5)
+
+#define SH_FSI_IFMT_TDM_CH(x) \
+	(SH_FSI_IFMT(TDM)	| SH_FSI_SET_CH_I(x))
+#define SH_FSI_IFMT_TDM_DELAY_CH(x) \
+	(SH_FSI_IFMT(TDM_DELAY)	| SH_FSI_SET_CH_I(x))
+
+#define SH_FSI_OFMT_TDM_CH(x) \
+	(SH_FSI_OFMT(TDM)	| SH_FSI_SET_CH_O(x))
+#define SH_FSI_OFMT_TDM_DELAY_CH(x) \
+	(SH_FSI_OFMT(TDM_DELAY)	| SH_FSI_SET_CH_O(x))
+
+struct sh_fsi_platform_info {
+	unsigned long porta_flags;
+	unsigned long portb_flags;
+};
+
+extern struct snd_soc_dai fsi_soc_dai[2];
+extern struct snd_soc_platform fsi_soc_platform;
+
+#endif /* __SOUND_FSI_H */

sound/soc/sh/Kconfig

@@ -20,7 +20,12 @@ config SND_SOC_SH4_HAC
 config SND_SOC_SH4_SSI
 	tristate
 
-
+config SND_SOC_SH4_FSI
+	tristate "SH4 FSI support"
+	depends on CPU_SUBTYPE_SH7724
+        select SH_DMA
+	help
+	  This option enables FSI sound support
 
 ##
 ## Boards

sound/soc/sh/Makefile

@@ -5,8 +5,10 @@ obj-$(CONFIG_SND_SOC_PCM_SH7760)	+= snd-soc-dma-sh7760.o
 ## audio units found on some SH-4
 snd-soc-hac-objs	:= hac.o
 snd-soc-ssi-objs	:= ssi.o
+snd-soc-fsi-objs	:= fsi.o
 obj-$(CONFIG_SND_SOC_SH4_HAC)	+= snd-soc-hac.o
 obj-$(CONFIG_SND_SOC_SH4_SSI)	+= snd-soc-ssi.o
+obj-$(CONFIG_SND_SOC_SH4_FSI)	+= snd-soc-fsi.o
 
 ## boards
 snd-soc-sh7760-ac97-objs	:= sh7760-ac97.o