ASoC: kirkwood: Add i2s support

This patch enables support for the i2s controller available on kirkwood
platforms
Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/Kconfig

@@ -32,6 +32,7 @@ source "sound/soc/fsl/Kconfig"
 source "sound/soc/imx/Kconfig"
 source "sound/soc/nuc900/Kconfig"
 source "sound/soc/omap/Kconfig"
+source "sound/soc/kirkwood/Kconfig"
 source "sound/soc/pxa/Kconfig"
 source "sound/soc/s3c24xx/Kconfig"
 source "sound/soc/s6000/Kconfig"

sound/soc/Makefile

@@ -10,6 +10,7 @@ obj-$(CONFIG_SND_SOC)	+= fsl/
 obj-$(CONFIG_SND_SOC)   += imx/
 obj-$(CONFIG_SND_SOC)	+= nuc900/
 obj-$(CONFIG_SND_SOC)	+= omap/
+obj-$(CONFIG_SND_SOC)	+= kirkwood/
 obj-$(CONFIG_SND_SOC)	+= pxa/
 obj-$(CONFIG_SND_SOC)	+= s3c24xx/
 obj-$(CONFIG_SND_SOC)	+= s6000/

sound/soc/kirkwood/Kconfig

+config SND_KIRKWOOD_SOC
+	tristate "SoC Audio for the Marvell Kirkwood chip"
+	depends on ARCH_KIRKWOOD
+	help
+	  Say Y or M if you want to add support for codecs attached to
+	  the Kirkwood I2S interface. You will also need to select the
+	  audio interfaces to support below.
+
+config SND_KIRKWOOD_SOC_I2S
+	tristate
+

sound/soc/kirkwood/Makefile

+snd-soc-kirkwood-objs := kirkwood-dma.o
+snd-soc-kirkwood-i2s-objs := kirkwood-i2s.o
+
+obj-$(CONFIG_SND_KIRKWOOD_SOC) += snd-soc-kirkwood.o
+obj-$(CONFIG_SND_KIRKWOOD_SOC_I2S) += snd-soc-kirkwood-i2s.o
+

sound/soc/kirkwood/kirkwood-dma.h

+/*
+ * kirkwood-dma.h
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#ifndef _KIRKWOOD_DMA_H
+#define _KIRKWOOD_DMA_H
+
+extern struct snd_soc_platform kirkwood_soc_platform;
+
+#endif

sound/soc/kirkwood/kirkwood-i2s.h

+/*
+ * kirkwood-i2s.h
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#ifndef _KIRKWOOD_I2S_H
+#define _KIRKWOOD_I2S_H
+
+extern struct snd_soc_dai kirkwood_i2s_dai;
+
+#endif

sound/soc/kirkwood/kirkwood.h

+/*
+ * kirkwood.h
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#ifndef _KIRKWOOD_AUDIO_H
+#define _KIRKWOOD_AUDIO_H
+
+#define KIRKWOOD_RECORD_WIN			0
+#define KIRKWOOD_PLAYBACK_WIN			1
+#define KIRKWOOD_MAX_AUDIO_WIN			2
+
+#define KIRKWOOD_AUDIO_WIN_BASE_REG(win)	(0xA00 + ((win)<<3))
+#define KIRKWOOD_AUDIO_WIN_CTRL_REG(win)	(0xA04 + ((win)<<3))
+
+
+#define KIRKWOOD_RECCTL			0x1000
+#define KIRKWOOD_RECCTL_SPDIF_EN		(1<<11)
+#define KIRKWOOD_RECCTL_I2S_EN			(1<<10)
+#define KIRKWOOD_RECCTL_PAUSE			(1<<9)
+#define KIRKWOOD_RECCTL_MUTE			(1<<8)
+#define KIRKWOOD_RECCTL_BURST_MASK		(3<<5)
+#define KIRKWOOD_RECCTL_BURST_128		(2<<5)
+#define KIRKWOOD_RECCTL_BURST_32		(1<<5)
+#define KIRKWOOD_RECCTL_MONO			(1<<4)
+#define KIRKWOOD_RECCTL_MONO_CHAN_RIGHT	(1<<3)
+#define KIRKWOOD_RECCTL_MONO_CHAN_LEFT		(0<<3)
+#define KIRKWOOD_RECCTL_SIZE_MASK		(7<<0)
+#define KIRKWOOD_RECCTL_SIZE_16		(7<<0)
+#define KIRKWOOD_RECCTL_SIZE_16_C		(3<<0)
+#define KIRKWOOD_RECCTL_SIZE_20		(2<<0)
+#define KIRKWOOD_RECCTL_SIZE_24		(1<<0)
+#define KIRKWOOD_RECCTL_SIZE_32		(0<<0)
+
+#define KIRKWOOD_REC_BUF_ADDR			0x1004
+#define KIRKWOOD_REC_BUF_SIZE			0x1008
+#define KIRKWOOD_REC_BYTE_COUNT			0x100C
+
+#define KIRKWOOD_PLAYCTL			0x1100
+#define KIRKWOOD_PLAYCTL_PLAY_BUSY		(1<<16)
+#define KIRKWOOD_PLAYCTL_BURST_MASK		(3<<11)
+#define KIRKWOOD_PLAYCTL_BURST_128		(2<<11)
+#define KIRKWOOD_PLAYCTL_BURST_32		(1<<11)
+#define KIRKWOOD_PLAYCTL_PAUSE			(1<<9)
+#define KIRKWOOD_PLAYCTL_SPDIF_MUTE		(1<<8)
+#define KIRKWOOD_PLAYCTL_I2S_MUTE		(1<<7)
+#define KIRKWOOD_PLAYCTL_SPDIF_EN		(1<<4)
+#define KIRKWOOD_PLAYCTL_I2S_EN		(1<<3)
+#define KIRKWOOD_PLAYCTL_SIZE_MASK		(7<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_16		(7<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_16_C		(3<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_20		(2<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_24		(1<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_32		(0<<0)
+
+#define KIRKWOOD_PLAY_BUF_ADDR			0x1104
+#define KIRKWOOD_PLAY_BUF_SIZE			0x1108
+#define KIRKWOOD_PLAY_BYTE_COUNT		0x110C
+
+#define KIRKWOOD_DCO_CTL			0x1204
+#define KIRKWOOD_DCO_CTL_OFFSET_MASK		(0xFFF<<2)
+#define KIRKWOOD_DCO_CTL_OFFSET_0		(0x800<<2)
+#define KIRKWOOD_DCO_CTL_FREQ_MASK		(3<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_11		(0<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_12		(1<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_24		(2<<0)
+
+#define KIRKWOOD_DCO_SPCR_STATUS		0x120c
+#define KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK	(1<<16)
+
+#define KIRKWOOD_ERR_CAUSE			0x1300
+#define KIRKWOOD_ERR_MASK			0x1304
+
+#define KIRKWOOD_INT_CAUSE			0x1308
+#define KIRKWOOD_INT_MASK			0x130C
+#define KIRKWOOD_INT_CAUSE_PLAY_BYTES		(1<<14)
+#define KIRKWOOD_INT_CAUSE_REC_BYTES		(1<<13)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_END	(1<<7)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_3Q		(1<<6)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_HALF	(1<<5)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_1Q		(1<<4)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_END		(1<<3)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_3Q		(1<<2)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_HALF	(1<<1)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_1Q		(1<<0)
+
+#define KIRKWOOD_REC_BYTE_INT_COUNT		0x1310
+#define KIRKWOOD_PLAY_BYTE_INT_COUNT		0x1314
+#define KIRKWOOD_BYTE_INT_COUNT_MASK		0xffffff
+
+#define KIRKWOOD_I2S_PLAYCTL			0x2508
+#define KIRKWOOD_I2S_RECCTL			0x2408
+#define KIRKWOOD_I2S_CTL_JUST_MASK		(0xf<<26)
+#define KIRKWOOD_I2S_CTL_LJ			(0<<26)
+#define KIRKWOOD_I2S_CTL_I2S			(5<<26)
+#define KIRKWOOD_I2S_CTL_RJ			(8<<26)
+#define KIRKWOOD_I2S_CTL_SIZE_MASK		(3<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_16		(3<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_20		(2<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_24		(1<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_32		(0<<30)
+
+#define KIRKWOOD_AUDIO_BUF_MAX			(16*1024*1024)
+
+/* Theses values come from the marvell alsa driver */
+/* need to find where they come from               */
+#define KIRKWOOD_SND_MIN_PERIODS		8
+#define KIRKWOOD_SND_MAX_PERIODS		16
+#define KIRKWOOD_SND_MIN_PERIOD_BYTES		0x4000
+#define KIRKWOOD_SND_MAX_PERIOD_BYTES		0x4000
+
+struct kirkwood_dma_data {
+	struct resource *mem;
+	void __iomem *io;
+	int irq;
+	int burst;
+	struct mbus_dram_target_info *dram;
+};
+
+#endif