ASoC: Ux500: Add MSP I2S-driver

Add driver for running I2S with the MSP-block.
Signed-off-by: NOla Lilja <ola.o.lilja@stericsson.com>
[Fixed trailing whitespace -- broonie]
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/Kconfig

@@ -47,6 +47,7 @@ source "sound/soc/s6000/Kconfig"
 source "sound/soc/sh/Kconfig"
 source "sound/soc/tegra/Kconfig"
 source "sound/soc/txx9/Kconfig"
+source "sound/soc/ux500/Kconfig"
 
 # Supported codecs
 source "sound/soc/codecs/Kconfig"

sound/soc/Makefile

@@ -25,3 +25,4 @@ obj-$(CONFIG_SND_SOC)	+= s6000/
 obj-$(CONFIG_SND_SOC)	+= sh/
 obj-$(CONFIG_SND_SOC)	+= tegra/
 obj-$(CONFIG_SND_SOC)	+= txx9/
+obj-$(CONFIG_SND_SOC)	+= ux500/

sound/soc/ux500/Kconfig

+#
+# Ux500 SoC audio configuration
+#
+menuconfig SND_SOC_UX500
+	tristate "SoC Audio support for Ux500 platform"
+	depends on SND_SOC
+	help
+		Say Y if you want to enable ASoC-support for
+		any of the Ux500 platforms (e.g. U8500).
+
+config SND_SOC_UX500_PLAT_MSP_I2S
+	tristate "Platform - MSP (I2S)"
+	depends on SND_SOC_UX500
+	help
+		Say Y if you want to enable the Ux500 MSP I2S-driver.

sound/soc/ux500/Makefile

+# Ux500 Platform Support
+
+snd-soc-ux500-plat-msp-i2s-objs := ux500_msp_dai.o ux500_msp_i2s.o
+obj-$(CONFIG_SND_SOC_UX500_PLAT_MSP_I2S) += snd-soc-ux500-plat-msp-i2s.o

sound/soc/ux500/ux500_msp_dai.h

+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
+ *         Roger Nilsson <roger.xr.nilsson@stericsson.com>
+ *         for ST-Ericsson.
+ *
+ * License terms:
+ *
+ * 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.
+ */
+
+#ifndef UX500_msp_dai_H
+#define UX500_msp_dai_H
+
+#include <linux/types.h>
+#include <linux/spinlock.h>
+
+#include "ux500_msp_i2s.h"
+
+#define UX500_NBR_OF_DAI	4
+
+#define UX500_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |	\
+			SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+
+#define UX500_I2S_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
+
+#define FRAME_PER_SINGLE_SLOT_8_KHZ		31
+#define FRAME_PER_SINGLE_SLOT_16_KHZ	124
+#define FRAME_PER_SINGLE_SLOT_44_1_KHZ	63
+#define FRAME_PER_SINGLE_SLOT_48_KHZ	49
+#define FRAME_PER_2_SLOTS				31
+#define FRAME_PER_8_SLOTS				138
+#define FRAME_PER_16_SLOTS				277
+
+#ifndef CONFIG_SND_SOC_UX500_AB5500
+#define UX500_MSP_INTERNAL_CLOCK_FREQ  40000000
+#define UX500_MSP1_INTERNAL_CLOCK_FREQ UX500_MSP_INTERNAL_CLOCK_FREQ
+#else
+#define UX500_MSP_INTERNAL_CLOCK_FREQ 13000000
+#define UX500_MSP1_INTERNAL_CLOCK_FREQ (UX500_MSP_INTERNAL_CLOCK_FREQ * 2)
+#endif
+
+#define UX500_MSP_MIN_CHANNELS		1
+#define UX500_MSP_MAX_CHANNELS		8
+
+#define PLAYBACK_CONFIGURED		1
+#define CAPTURE_CONFIGURED		2
+
+enum ux500_msp_clock_id {
+	UX500_MSP_MASTER_CLOCK,
+};
+
+struct ux500_msp_i2s_drvdata {
+	struct ux500_msp *msp;
+	struct regulator *reg_vape;
+	struct ux500_msp_dma_params playback_dma_data;
+	struct ux500_msp_dma_params capture_dma_data;
+	unsigned int fmt;
+	unsigned int tx_mask;
+	unsigned int rx_mask;
+	int slots;
+	int slot_width;
+	u8 configured;
+	int data_delay;
+
+	/* Clocks */
+	unsigned int master_clk;
+	struct clk *clk;
+
+	/* Regulators */
+	int vape_opp_constraint;
+};
+
+int ux500_msp_dai_set_data_delay(struct snd_soc_dai *dai, int delay);
+
+#endif

sound/soc/ux500/ux500_msp_i2s.h

+/*
+ * Copyright (C) ST-Ericsson SA 2012
+ *
+ * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
+ *         for ST-Ericsson.
+ *
+ * License terms:
+ *
+ * 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.
+ */
+
+
+#ifndef UX500_MSP_I2S_H
+#define UX500_MSP_I2S_H
+
+#include <linux/platform_device.h>
+
+#include <mach/board-mop500-msp.h>
+
+#define MSP_INPUT_FREQ_APB 48000000
+
+/*** Stereo mode. Used for APB data accesses as 16 bits accesses (mono),
+ *   32 bits accesses (stereo).
+ ***/
+enum msp_stereo_mode {
+	MSP_MONO,
+	MSP_STEREO
+};
+
+/* Direction (Transmit/Receive mode) */
+enum msp_direction {
+	MSP_TX = 1,
+	MSP_RX = 2
+};
+
+/* Transmit and receive configuration register */
+#define MSP_BIG_ENDIAN           0x00000000
+#define MSP_LITTLE_ENDIAN        0x00001000
+#define MSP_UNEXPECTED_FS_ABORT  0x00000000
+#define MSP_UNEXPECTED_FS_IGNORE 0x00008000
+#define MSP_NON_MODE_BIT_MASK    0x00009000
+
+/* Global configuration register */
+#define RX_ENABLE             0x00000001
+#define RX_FIFO_ENABLE        0x00000002
+#define RX_SYNC_SRG           0x00000010
+#define RX_CLK_POL_RISING     0x00000020
+#define RX_CLK_SEL_SRG        0x00000040
+#define TX_ENABLE             0x00000100
+#define TX_FIFO_ENABLE        0x00000200
+#define TX_SYNC_SRG_PROG      0x00001800
+#define TX_SYNC_SRG_AUTO      0x00001000
+#define TX_CLK_POL_RISING     0x00002000
+#define TX_CLK_SEL_SRG        0x00004000
+#define TX_EXTRA_DELAY_ENABLE 0x00008000
+#define SRG_ENABLE            0x00010000
+#define FRAME_GEN_ENABLE      0x00100000
+#define SRG_CLK_SEL_APB       0x00000000
+#define RX_FIFO_SYNC_HI       0x00000000
+#define TX_FIFO_SYNC_HI       0x00000000
+#define SPI_CLK_MODE_NORMAL   0x00000000
+
+#define MSP_FRAME_SIZE_AUTO -1
+
+#define MSP_DR		0x00
+#define MSP_GCR		0x04
+#define MSP_TCF		0x08
+#define MSP_RCF		0x0c
+#define MSP_SRG		0x10
+#define MSP_FLR		0x14
+#define MSP_DMACR	0x18
+
+#define MSP_IMSC	0x20
+#define MSP_RIS		0x24
+#define MSP_MIS		0x28
+#define MSP_ICR		0x2c
+#define MSP_MCR		0x30
+#define MSP_RCV		0x34
+#define MSP_RCM		0x38
+
+#define MSP_TCE0	0x40
+#define MSP_TCE1	0x44
+#define MSP_TCE2	0x48
+#define MSP_TCE3	0x4c
+
+#define MSP_RCE0	0x60
+#define MSP_RCE1	0x64
+#define MSP_RCE2	0x68
+#define MSP_RCE3	0x6c
+#define MSP_IODLY	0x70
+
+#define MSP_ITCR	0x80
+#define MSP_ITIP	0x84
+#define MSP_ITOP	0x88
+#define MSP_TSTDR	0x8c
+
+#define MSP_PID0	0xfe0
+#define MSP_PID1	0xfe4
+#define MSP_PID2	0xfe8
+#define MSP_PID3	0xfec
+
+#define MSP_CID0	0xff0
+#define MSP_CID1	0xff4
+#define MSP_CID2	0xff8
+#define MSP_CID3	0xffc
+
+/* Protocol dependant parameters list */
+#define RX_ENABLE_MASK		BIT(0)
+#define RX_FIFO_ENABLE_MASK	BIT(1)
+#define RX_FSYNC_MASK		BIT(2)
+#define DIRECT_COMPANDING_MASK	BIT(3)
+#define RX_SYNC_SEL_MASK	BIT(4)
+#define RX_CLK_POL_MASK		BIT(5)
+#define RX_CLK_SEL_MASK		BIT(6)
+#define LOOPBACK_MASK		BIT(7)
+#define TX_ENABLE_MASK		BIT(8)
+#define TX_FIFO_ENABLE_MASK	BIT(9)
+#define TX_FSYNC_MASK		BIT(10)
+#define TX_MSP_TDR_TSR		BIT(11)
+#define TX_SYNC_SEL_MASK	(BIT(12) | BIT(11))
+#define TX_CLK_POL_MASK		BIT(13)
+#define TX_CLK_SEL_MASK		BIT(14)
+#define TX_EXTRA_DELAY_MASK	BIT(15)
+#define SRG_ENABLE_MASK		BIT(16)
+#define SRG_CLK_POL_MASK	BIT(17)
+#define SRG_CLK_SEL_MASK	(BIT(19) | BIT(18))
+#define FRAME_GEN_EN_MASK	BIT(20)
+#define SPI_CLK_MODE_MASK	(BIT(22) | BIT(21))
+#define SPI_BURST_MODE_MASK	BIT(23)
+
+#define RXEN_SHIFT		0
+#define RFFEN_SHIFT		1
+#define RFSPOL_SHIFT		2
+#define DCM_SHIFT		3
+#define RFSSEL_SHIFT		4
+#define RCKPOL_SHIFT		5
+#define RCKSEL_SHIFT		6
+#define LBM_SHIFT		7
+#define TXEN_SHIFT		8
+#define TFFEN_SHIFT		9
+#define TFSPOL_SHIFT		10
+#define TFSSEL_SHIFT		11
+#define TCKPOL_SHIFT		13
+#define TCKSEL_SHIFT		14
+#define TXDDL_SHIFT		15
+#define SGEN_SHIFT		16
+#define SCKPOL_SHIFT		17
+#define SCKSEL_SHIFT		18
+#define FGEN_SHIFT		20
+#define SPICKM_SHIFT		21
+#define TBSWAP_SHIFT		28
+
+#define RCKPOL_MASK		BIT(0)
+#define TCKPOL_MASK		BIT(0)
+#define SPICKM_MASK		(BIT(1) | BIT(0))
+#define MSP_RX_CLKPOL_BIT(n)     ((n & RCKPOL_MASK) << RCKPOL_SHIFT)
+#define MSP_TX_CLKPOL_BIT(n)     ((n & TCKPOL_MASK) << TCKPOL_SHIFT)
+
+#define P1ELEN_SHIFT		0
+#define P1FLEN_SHIFT		3
+#define DTYP_SHIFT		10
+#define ENDN_SHIFT		12
+#define DDLY_SHIFT		13
+#define FSIG_SHIFT		15
+#define P2ELEN_SHIFT		16
+#define P2FLEN_SHIFT		19
+#define P2SM_SHIFT		26
+#define P2EN_SHIFT		27
+#define FSYNC_SHIFT		15
+
+#define P1ELEN_MASK		0x00000007
+#define P2ELEN_MASK		0x00070000
+#define P1FLEN_MASK		0x00000378
+#define P2FLEN_MASK		0x03780000
+#define DDLY_MASK		0x00003000
+#define DTYP_MASK		0x00000600
+#define P2SM_MASK		0x04000000
+#define P2EN_MASK		0x08000000
+#define ENDN_MASK		0x00001000
+#define TFSPOL_MASK		0x00000400
+#define TBSWAP_MASK		0x30000000
+#define COMPANDING_MODE_MASK	0x00000c00
+#define FSYNC_MASK		0x00008000
+
+#define MSP_P1_ELEM_LEN_BITS(n)		(n & P1ELEN_MASK)
+#define MSP_P2_ELEM_LEN_BITS(n)		(((n) << P2ELEN_SHIFT) & P2ELEN_MASK)
+#define MSP_P1_FRAME_LEN_BITS(n)	(((n) << P1FLEN_SHIFT) & P1FLEN_MASK)
+#define MSP_P2_FRAME_LEN_BITS(n)	(((n) << P2FLEN_SHIFT) & P2FLEN_MASK)
+#define MSP_DATA_DELAY_BITS(n)		(((n) << DDLY_SHIFT) & DDLY_MASK)
+#define MSP_DATA_TYPE_BITS(n)		(((n) << DTYP_SHIFT) & DTYP_MASK)
+#define MSP_P2_START_MODE_BIT(n)	((n << P2SM_SHIFT) & P2SM_MASK)
+#define MSP_P2_ENABLE_BIT(n)		((n << P2EN_SHIFT) & P2EN_MASK)
+#define MSP_SET_ENDIANNES_BIT(n)	((n << ENDN_SHIFT) & ENDN_MASK)
+#define MSP_FSYNC_POL(n)		((n << TFSPOL_SHIFT) & TFSPOL_MASK)
+#define MSP_DATA_WORD_SWAP(n)		((n << TBSWAP_SHIFT) & TBSWAP_MASK)
+#define MSP_SET_COMPANDING_MODE(n)	((n << DTYP_SHIFT) & \
+						COMPANDING_MODE_MASK)
+#define MSP_SET_FSYNC_IGNORE(n)		((n << FSYNC_SHIFT) & FSYNC_MASK)
+
+/* Flag register */
+#define RX_BUSY			BIT(0)
+#define RX_FIFO_EMPTY		BIT(1)
+#define RX_FIFO_FULL		BIT(2)
+#define TX_BUSY			BIT(3)
+#define TX_FIFO_EMPTY		BIT(4)
+#define TX_FIFO_FULL		BIT(5)
+
+#define RBUSY_SHIFT		0
+#define RFE_SHIFT		1
+#define RFU_SHIFT		2
+#define TBUSY_SHIFT		3
+#define TFE_SHIFT		4
+#define TFU_SHIFT		5
+
+/* Multichannel control register */
+#define RMCEN_SHIFT		0
+#define RMCSF_SHIFT		1
+#define RCMPM_SHIFT		3
+#define TMCEN_SHIFT		5
+#define TNCSF_SHIFT		6
+
+/* Sample rate generator register */
+#define SCKDIV_SHIFT		0
+#define FRWID_SHIFT		10
+#define FRPER_SHIFT		16
+
+#define SCK_DIV_MASK		0x0000003FF
+#define FRAME_WIDTH_BITS(n)	(((n) << FRWID_SHIFT)  & 0x0000FC00)
+#define FRAME_PERIOD_BITS(n)	(((n) << FRPER_SHIFT) & 0x1FFF0000)
+
+/* DMA controller register */
+#define RX_DMA_ENABLE		BIT(0)
+#define TX_DMA_ENABLE		BIT(1)
+
+#define RDMAE_SHIFT		0
+#define TDMAE_SHIFT		1
+
+/* Interrupt Register */
+#define RX_SERVICE_INT		BIT(0)
+#define RX_OVERRUN_ERROR_INT	BIT(1)
+#define RX_FSYNC_ERR_INT	BIT(2)
+#define RX_FSYNC_INT		BIT(3)
+#define TX_SERVICE_INT		BIT(4)
+#define TX_UNDERRUN_ERR_INT	BIT(5)
+#define TX_FSYNC_ERR_INT	BIT(6)
+#define TX_FSYNC_INT		BIT(7)
+#define ALL_INT			0x000000ff
+
+/* MSP test control register */
+#define MSP_ITCR_ITEN		BIT(0)
+#define MSP_ITCR_TESTFIFO	BIT(1)
+
+#define RMCEN_BIT   0
+#define RMCSF_BIT   1
+#define RCMPM_BIT   3
+#define TMCEN_BIT   5
+#define TNCSF_BIT   6
+
+/* Single or dual phase mode */
+enum msp_phase_mode {
+	MSP_SINGLE_PHASE,
+	MSP_DUAL_PHASE
+};
+
+/* Frame length */
+enum msp_frame_length {
+	MSP_FRAME_LEN_1 = 0,
+	MSP_FRAME_LEN_2 = 1,
+	MSP_FRAME_LEN_4 = 3,
+	MSP_FRAME_LEN_8 = 7,
+	MSP_FRAME_LEN_12 = 11,
+	MSP_FRAME_LEN_16 = 15,
+	MSP_FRAME_LEN_20 = 19,
+	MSP_FRAME_LEN_32 = 31,
+	MSP_FRAME_LEN_48 = 47,
+	MSP_FRAME_LEN_64 = 63
+};
+
+/* Element length */
+enum msp_elem_length {
+	MSP_ELEM_LEN_8 = 0,
+	MSP_ELEM_LEN_10 = 1,
+	MSP_ELEM_LEN_12 = 2,
+	MSP_ELEM_LEN_14 = 3,
+	MSP_ELEM_LEN_16 = 4,
+	MSP_ELEM_LEN_20 = 5,
+	MSP_ELEM_LEN_24 = 6,
+	MSP_ELEM_LEN_32 = 7
+};
+
+enum msp_data_xfer_width {
+	MSP_DATA_TRANSFER_WIDTH_BYTE,
+	MSP_DATA_TRANSFER_WIDTH_HALFWORD,
+	MSP_DATA_TRANSFER_WIDTH_WORD
+};
+
+enum msp_frame_sync {
+	MSP_FSYNC_UNIGNORE = 0,
+	MSP_FSYNC_IGNORE = 1,
+};
+
+enum msp_phase2_start_mode {
+	MSP_PHASE2_START_MODE_IMEDIATE,
+	MSP_PHASE2_START_MODE_FSYNC
+};
+
+enum msp_btf {
+	MSP_BTF_MS_BIT_FIRST = 0,
+	MSP_BTF_LS_BIT_FIRST = 1
+};
+
+enum msp_fsync_pol {
+	MSP_FSYNC_POL_ACT_HI = 0,
+	MSP_FSYNC_POL_ACT_LO = 1
+};
+
+/* Data delay (in bit clock cycles) */
+enum msp_delay {
+	MSP_DELAY_0 = 0,
+	MSP_DELAY_1 = 1,
+	MSP_DELAY_2 = 2,
+	MSP_DELAY_3 = 3
+};
+
+/* Configurations of clocks (transmit, receive or sample rate generator) */
+enum msp_edge {
+	MSP_FALLING_EDGE = 0,
+	MSP_RISING_EDGE = 1,
+};
+
+enum msp_hws {
+	MSP_SWAP_NONE = 0,
+	MSP_SWAP_BYTE_PER_WORD = 1,
+	MSP_SWAP_BYTE_PER_HALF_WORD = 2,
+	MSP_SWAP_HALF_WORD_PER_WORD = 3
+};
+
+enum msp_compress_mode {
+	MSP_COMPRESS_MODE_LINEAR = 0,
+	MSP_COMPRESS_MODE_MU_LAW = 2,
+	MSP_COMPRESS_MODE_A_LAW = 3
+};
+
+enum msp_spi_burst_mode {
+	MSP_SPI_BURST_MODE_DISABLE = 0,
+	MSP_SPI_BURST_MODE_ENABLE = 1
+};
+
+enum msp_expand_mode {
+	MSP_EXPAND_MODE_LINEAR = 0,
+	MSP_EXPAND_MODE_LINEAR_SIGNED = 1,
+	MSP_EXPAND_MODE_MU_LAW = 2,
+	MSP_EXPAND_MODE_A_LAW = 3
+};
+
+#define MSP_FRAME_PERIOD_IN_MONO_MODE 256
+#define MSP_FRAME_PERIOD_IN_STEREO_MODE 32
+#define MSP_FRAME_WIDTH_IN_STEREO_MODE 16
+
+enum msp_protocol {
+	MSP_I2S_PROTOCOL,
+	MSP_PCM_PROTOCOL,
+	MSP_PCM_COMPAND_PROTOCOL,
+	MSP_INVALID_PROTOCOL
+};
+
+/*
+ * No of registers to backup during
+ * suspend resume
+ */
+#define MAX_MSP_BACKUP_REGS 36
+
+enum enum_i2s_controller {
+	MSP_0_I2S_CONTROLLER = 0,
+	MSP_1_I2S_CONTROLLER,
+	MSP_2_I2S_CONTROLLER,
+	MSP_3_I2S_CONTROLLER,
+};
+
+enum i2s_direction_t {
+	MSP_DIR_TX = 0x01,
+	MSP_DIR_RX = 0x02,
+};
+
+enum msp_data_size {
+	MSP_DATA_BITS_DEFAULT = -1,
+	MSP_DATA_BITS_8 = 0x00,
+	MSP_DATA_BITS_10,
+	MSP_DATA_BITS_12,
+	MSP_DATA_BITS_14,
+	MSP_DATA_BITS_16,
+	MSP_DATA_BITS_20,
+	MSP_DATA_BITS_24,
+	MSP_DATA_BITS_32,
+};
+
+enum msp_state {
+	MSP_STATE_IDLE = 0,
+	MSP_STATE_CONFIGURED = 1,
+	MSP_STATE_RUNNING = 2,
+};
+
+enum msp_rx_comparison_enable_mode {
+	MSP_COMPARISON_DISABLED = 0,
+	MSP_COMPARISON_NONEQUAL_ENABLED = 2,
+	MSP_COMPARISON_EQUAL_ENABLED = 3
+};
+
+struct msp_multichannel_config {
+	bool rx_multichannel_enable;
+	bool tx_multichannel_enable;
+	enum msp_rx_comparison_enable_mode rx_comparison_enable_mode;
+	u8 padding;
+	u32 comparison_value;
+	u32 comparison_mask;
+	u32 rx_channel_0_enable;
+	u32 rx_channel_1_enable;
+	u32 rx_channel_2_enable;
+	u32 rx_channel_3_enable;
+	u32 tx_channel_0_enable;
+	u32 tx_channel_1_enable;
+	u32 tx_channel_2_enable;
+	u32 tx_channel_3_enable;
+};
+
+struct msp_protdesc {
+	u32 rx_phase_mode;
+	u32 tx_phase_mode;
+	u32 rx_phase2_start_mode;
+	u32 tx_phase2_start_mode;
+	u32 rx_byte_order;
+	u32 tx_byte_order;
+	u32 rx_frame_len_1;
+	u32 rx_frame_len_2;
+	u32 tx_frame_len_1;
+	u32 tx_frame_len_2;
+	u32 rx_elem_len_1;
+	u32 rx_elem_len_2;
+	u32 tx_elem_len_1;
+	u32 tx_elem_len_2;
+	u32 rx_data_delay;
+	u32 tx_data_delay;
+	u32 rx_clk_pol;
+	u32 tx_clk_pol;
+	u32 rx_fsync_pol;
+	u32 tx_fsync_pol;
+	u32 rx_half_word_swap;
+	u32 tx_half_word_swap;
+	u32 compression_mode;
+	u32 expansion_mode;
+	u32 frame_sync_ignore;
+	u32 frame_period;
+	u32 frame_width;
+	u32 clocks_per_frame;
+};
+
+struct i2s_message {
+	enum i2s_direction_t i2s_direction;
+	void *txdata;
+	void *rxdata;
+	size_t txbytes;
+	size_t rxbytes;
+	int dma_flag;
+	int tx_offset;
+	int rx_offset;
+	bool cyclic_dma;
+	dma_addr_t buf_addr;
+	size_t buf_len;
+	size_t period_len;
+};
+
+struct i2s_controller {
+	struct module *owner;
+	unsigned int id;
+	unsigned int class;
+	const struct i2s_algorithm *algo; /* the algorithm to access the bus */
+	void *data;
+	struct mutex bus_lock;
+	struct device dev; /* the controller device */
+	char name[48];
+};
+
+struct ux500_msp_config {
+	unsigned int f_inputclk;
+	unsigned int rx_clk_sel;
+	unsigned int tx_clk_sel;
+	unsigned int srg_clk_sel;
+	unsigned int rx_fsync_pol;
+	unsigned int tx_fsync_pol;
+	unsigned int rx_fsync_sel;
+	unsigned int tx_fsync_sel;
+	unsigned int rx_fifo_config;
+	unsigned int tx_fifo_config;
+	unsigned int spi_clk_mode;
+	unsigned int spi_burst_mode;
+	unsigned int loopback_enable;
+	unsigned int tx_data_enable;
+	unsigned int default_protdesc;
+	struct msp_protdesc protdesc;
+	int multichannel_configured;
+	struct msp_multichannel_config multichannel_config;
+	unsigned int direction;
+	unsigned int protocol;
+	unsigned int frame_freq;
+	unsigned int frame_size;
+	enum msp_data_size data_size;
+	unsigned int def_elem_len;
+	unsigned int iodelay;
+	void (*handler) (void *data);
+	void *tx_callback_data;
+	void *rx_callback_data;
+};
+
+struct ux500_msp {
+	enum enum_i2s_controller id;
+	void __iomem *registers;
+	struct device *dev;
+	struct i2s_controller *i2s_cont;
+	struct stedma40_chan_cfg *dma_cfg_rx;
+	struct stedma40_chan_cfg *dma_cfg_tx;
+	struct dma_chan *tx_pipeid;
+	struct dma_chan *rx_pipeid;
+	enum msp_state msp_state;
+	int (*transfer) (struct ux500_msp *msp, struct i2s_message *message);
+	int (*plat_init) (void);
+	int (*plat_exit) (void);
+	struct timer_list notify_timer;
+	int def_elem_len;
+	unsigned int dir_busy;
+	int loopback_enable;
+	u32 backup_regs[MAX_MSP_BACKUP_REGS];
+	unsigned int f_bitclk;
+};
+
+struct ux500_msp_dma_params {
+	unsigned int data_size;
+	struct stedma40_chan_cfg *dma_cfg;
+};
+
+int ux500_msp_i2s_init_msp(struct platform_device *pdev,
+			struct ux500_msp **msp_p,
+			struct msp_i2s_platform_data *platform_data);
+void ux500_msp_i2s_cleanup_msp(struct platform_device *pdev,
+			struct ux500_msp *msp);
+int ux500_msp_i2s_open(struct ux500_msp *msp, struct ux500_msp_config *config);
+int ux500_msp_i2s_close(struct ux500_msp *msp,
+			unsigned int dir);
+int ux500_msp_i2s_trigger(struct ux500_msp *msp, int cmd,
+			int direction);
+
+#endif