Merge branch 'audio' into linux-stable-ux500-3.1

Conflicts:
	drivers/misc/Makefile

2 files changed, 1192 insertions, 0 deletions

diff --git a/arch/arm/mach-ux500/board-mop500-msp.c b/arch/arm/mach-ux500/board-mop500-msp.c
new file mode 100644
index 00000000000..35d8480143f
--- /dev/null
+++ b/arch/arm/mach-ux500/board-mop500-msp.c
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#include <linux/platform_device.h>
+#include <linux/i2s/i2s.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/gpio/nomadik.h>
+
+#include <plat/ste_dma40.h>
+#include <plat/pincfg.h>
+
+#include <mach/devices.h>
+#include <mach/ste-dma40-db8500.h>
+#include <mach/hardware.h>
+#include <mach/irqs.h>
+#include <mach/msp.h>
+
+#include "board-mop500.h"
+#include "devices-db8500.h"
+#include "pins-db8500.h"
+
+/* MSP1/3 Tx/Rx usage protection */
+static DEFINE_SPINLOCK(msp_rxtx_lock);
+
+/* Reference Count */
+static int msp_rxtx_ref;
+
+static pin_cfg_t mop500_msp1_pins_init[] = {
+		GPIO33_MSP1_TXD | PIN_OUTPUT_LOW   | PIN_SLPM_WAKEUP_DISABLE,
+		GPIO34_MSP1_TFS | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE,
+		GPIO35_MSP1_TCK | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE,
+		GPIO36_MSP1_RXD | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_DISABLE,
+};
+
+static pin_cfg_t mop500_msp1_pins_exit[] = {
+		GPIO33_MSP1_TXD | PIN_OUTPUT_LOW   | PIN_SLPM_WAKEUP_ENABLE,
+		GPIO34_MSP1_TFS | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE,
+		GPIO35_MSP1_TCK | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE,
+		GPIO36_MSP1_RXD | PIN_INPUT_NOPULL | PIN_SLPM_WAKEUP_ENABLE,
+};
+
+int msp13_i2s_init(void)
+{
+	int retval = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&msp_rxtx_lock, flags);
+	if (msp_rxtx_ref == 0)
+		retval = nmk_config_pins(
+				ARRAY_AND_SIZE(mop500_msp1_pins_init));
+	if (!retval)
+		msp_rxtx_ref++;
+	spin_unlock_irqrestore(&msp_rxtx_lock, flags);
+
+	return retval;
+}
+
+int msp13_i2s_exit(void)
+{
+	int retval = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&msp_rxtx_lock, flags);
+	WARN_ON(!msp_rxtx_ref);
+	msp_rxtx_ref--;
+	if (msp_rxtx_ref == 0)
+		retval = nmk_config_pins_sleep(
+				ARRAY_AND_SIZE(mop500_msp1_pins_exit));
+	spin_unlock_irqrestore(&msp_rxtx_lock, flags);
+
+	return retval;
+}
+
+static struct stedma40_chan_cfg msp0_dma_rx = {
+	.high_priority = true,
+	.dir = STEDMA40_PERIPH_TO_MEM,
+
+	.src_dev_type = DB8500_DMA_DEV31_MSP0_RX_SLIM0_CH0_RX,
+	.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+
+	.src_info.psize = STEDMA40_PSIZE_LOG_4,
+	.dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+	/* data_width is set during configuration */
+};
+
+static struct stedma40_chan_cfg msp0_dma_tx = {
+	.high_priority = true,
+	.dir = STEDMA40_MEM_TO_PERIPH,
+
+	.src_dev_type = STEDMA40_DEV_DST_MEMORY,
+	.dst_dev_type = DB8500_DMA_DEV31_MSP0_TX_SLIM0_CH0_TX,
+
+	.src_info.psize = STEDMA40_PSIZE_LOG_4,
+	.dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+	/* data_width is set during configuration */
+};
+
+static struct msp_i2s_platform_data msp0_platform_data = {
+	.id = MSP_0_I2S_CONTROLLER,
+	.msp_i2s_dma_rx = &msp0_dma_rx,
+	.msp_i2s_dma_tx = &msp0_dma_tx,
+};
+
+static struct stedma40_chan_cfg msp1_dma_rx = {
+	.high_priority = true,
+	.dir = STEDMA40_PERIPH_TO_MEM,
+
+	.src_dev_type = DB8500_DMA_DEV30_MSP3_RX,
+	.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+
+	.src_info.psize = STEDMA40_PSIZE_LOG_4,
+	.dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+	/* data_width is set during configuration */
+};
+
+static struct stedma40_chan_cfg msp1_dma_tx = {
+	.high_priority = true,
+	.dir = STEDMA40_MEM_TO_PERIPH,
+
+	.src_dev_type = STEDMA40_DEV_DST_MEMORY,
+	.dst_dev_type = DB8500_DMA_DEV30_MSP1_TX,
+
+	.src_info.psize = STEDMA40_PSIZE_LOG_4,
+	.dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+	/* data_width is set during configuration */
+};
+
+static struct msp_i2s_platform_data msp1_platform_data = {
+	.id = MSP_1_I2S_CONTROLLER,
+	.msp_i2s_dma_rx = NULL,
+	.msp_i2s_dma_tx = &msp1_dma_tx,
+	.msp_i2s_init = msp13_i2s_init,
+	.msp_i2s_exit = msp13_i2s_exit,
+};
+
+static struct stedma40_chan_cfg msp2_dma_rx = {
+	.high_priority = true,
+	.dir = STEDMA40_PERIPH_TO_MEM,
+
+	.src_dev_type = DB8500_DMA_DEV14_MSP2_RX,
+	.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
+
+	/* MSP2 DMA doesn't work with PSIZE == 4 on DB8500v2 */
+	.src_info.psize = STEDMA40_PSIZE_LOG_1,
+	.dst_info.psize = STEDMA40_PSIZE_LOG_1,
+
+	/* data_width is set during configuration */
+};
+
+static struct stedma40_chan_cfg msp2_dma_tx = {
+	.high_priority = true,
+	.dir = STEDMA40_MEM_TO_PERIPH,
+
+	.src_dev_type = STEDMA40_DEV_DST_MEMORY,
+	.dst_dev_type = DB8500_DMA_DEV14_MSP2_TX,
+
+	.src_info.psize = STEDMA40_PSIZE_LOG_4,
+	.dst_info.psize = STEDMA40_PSIZE_LOG_4,
+
+	.use_fixed_channel = true,
+	.phy_channel = 1,
+
+	/* data_width is set during configuration */
+};
+
+static struct msp_i2s_platform_data msp2_platform_data = {
+	.id = MSP_2_I2S_CONTROLLER,
+	.msp_i2s_dma_rx = &msp2_dma_rx,
+	.msp_i2s_dma_tx = &msp2_dma_tx,
+};
+
+static struct msp_i2s_platform_data msp3_platform_data = {
+	.id		= MSP_3_I2S_CONTROLLER,
+	.msp_i2s_dma_rx	= &msp1_dma_rx,
+	.msp_i2s_dma_tx	= NULL,
+	.msp_i2s_init = msp13_i2s_init,
+	.msp_i2s_exit = msp13_i2s_exit,
+};
+
+static struct i2s_board_info stm_i2s_board_info[] __initdata = {
+	{
+		.modalias	= "i2s_device.0",
+		.id		= 0,
+		.chip_select	= 0,
+	},
+	{
+		.modalias	= "i2s_device.1",
+		.id		= 1,
+		.chip_select	= 1,
+	},
+	{
+		.modalias	= "i2s_device.2",
+		.id		= 2,
+		.chip_select	= 2,
+	},
+	{
+		.modalias	= "i2s_device.3",
+		.id		= 3,
+		.chip_select	= 3,
+	},
+};
+
+void __init mop500_msp_init(void)
+{
+	db8500_add_msp0_i2s(&msp0_platform_data);
+	db8500_add_msp1_i2s(&msp1_platform_data);
+	db8500_add_msp2_i2s(&msp2_platform_data);
+	db8500_add_msp3_i2s(&msp3_platform_data);
+
+	i2s_register_board_info(stm_i2s_board_info,
+				ARRAY_SIZE(stm_i2s_board_info));
+}
diff --git a/arch/arm/mach-ux500/include/mach/msp.h b/arch/arm/mach-ux500/include/mach/msp.h
new file mode 100644
index 00000000000..b5b9761ea45
--- /dev/null
+++ b/arch/arm/mach-ux500/include/mach/msp.h
@@ -0,0 +1,972 @@
+/*
+ * Copyright (c) 2009 STMicroelectronics
+ *
+ * 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 _STM_MSP_HEADER
+#define _STM_MSP_HEADER
+#include <linux/device.h>
+#include <linux/spinlock.h>
+#include <linux/semaphore.h>
+#include <linux/dmaengine.h>
+#include <linux/i2s/i2s.h>
+#include <linux/irqreturn.h>
+#include <linux/bitops.h>
+#include <plat/ste_dma40.h>
+#include <linux/gpio.h>
+#include <linux/spi/stm_msp.h>
+
+/* Generic config struct. Use the actual values defined below for global
+ * control register
+ */
+
+enum msp_state {
+	MSP_STATE_IDLE = 0,
+	MSP_STATE_CONFIGURED = 1,
+	MSP_STATE_RUN = 2,
+};
+
+enum msp_rx_comparison_enable_mode {
+	MSP_COMPARISON_DISABLED = 0,
+	MSP_COMPARISON_NONEQUAL_ENABLED = 2,
+	MSP_COMPARISON_EQUAL_ENABLED = 3
+};
+
+#define RMCEN_BIT   0
+#define RMCSF_BIT   1
+#define RCMPM_BIT   3
+#define TMCEN_BIT   5
+#define TNCSF_BIT   6
+
+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_protocol_desc- MSP Protocol desc structure per MSP.
+ * @rx_phase_mode: rx_phase_mode whether single or dual.
+ * @tx_phase_mode: tx_phase_mode whether single or dual.
+ * @rx_phase2_start_mode: rx_phase2_start_mode whether imediate or after
+ * some delay.
+ * @tx_phase2_start_mode: tx_phase2_start_mode whether imediate or after
+ * some delay.
+ * @rx_bit_transfer_format: MSP or LSB.
+ * @tx_bit_transfer_format: MSP or LSB.
+ * @rx_frame_length_1: Frame1 length 1,2,3..
+ * @rx_frame_length_2: Frame2 length 1,2,3..
+ * @tx_frame_length_1: Frame1 length 1,2,3..
+ * @tx_frame_length_2: Frame2 length 1,2,3..
+ * @rx_element_length_1: Element1 length 1,2,...
+ * @rx_element_length_2: Element2 length 1,2,...
+ * @tx_element_length_1: Element1 length 1,2,...
+ * @tx_element_length_2: Element2 length 1,2,...
+ * @rx_data_delay: Delay in clk cycle after frame sync
+ * @tx_data_delay: Delay in clk cycle after frame sync
+ * @rx_clock_pol: Rxpol whether rising or falling.It indicates pol of bit clock.
+ * @tx_clock_pol: Txpol whether rising or falling.It indicates pol of bit clock.
+ * @rx_frame_sync_pol: Frame sync pol whether rising or Falling.
+ * @tx_frame_sync_pol: Frame sync pol whether rising or Falling.
+ * @rx_half_word_swap: Word swap half word, full word.
+ * @tx_half_word_swap: Word swap half word, full word.
+ * @compression_mode: Compression mode whether Alaw or Ulaw or disabled.
+ * @expansion_mode: Compression mode whether Alaw or Ulaw or disabled.
+ * @spi_clk_mode: Spi clock mode to be enabled or not.
+ * @spi_burst_mode: Spi burst mode to be enabled or not.
+ * @frame_sync_ignore: Frame sync to be ignored or not. Ignore in case of Audio
+ * codec acting as Master.
+ * @frame_period: Frame period (clk cycles) after which new frame sync occurs.
+ * @frame_width: Frame width (clk cycles) after which frame sycn changes state.
+ * @total_clocks_for_one_frame: No. of clk cycles per frame.
+ *
+ * Main Msp protocol descriptor data structure to be used to store various info
+ * in transmit or recevie configuration registers of an MSP.
+ */
+
+struct msp_protocol_desc {
+	u32 rx_phase_mode;
+	u32 tx_phase_mode;
+	u32 rx_phase2_start_mode;
+	u32 tx_phase2_start_mode;
+	u32 rx_bit_transfer_format;
+	u32 tx_bit_transfer_format;
+	u32 rx_frame_length_1;
+	u32 rx_frame_length_2;
+	u32 tx_frame_length_1;
+	u32 tx_frame_length_2;
+	u32 rx_element_length_1;
+	u32 rx_element_length_2;
+	u32 tx_element_length_1;
+	u32 tx_element_length_2;
+	u32 rx_data_delay;
+	u32 tx_data_delay;
+	u32 rx_clock_pol;
+	u32 tx_clock_pol;
+	u32 rx_frame_sync_pol;
+	u32 tx_frame_sync_pol;
+	u32 rx_half_word_swap;
+	u32 tx_half_word_swap;
+	u32 compression_mode;
+	u32 expansion_mode;
+	u32 spi_clk_mode;
+	u32 spi_burst_mode;
+	u32 frame_sync_ignore;
+	u32 frame_period;
+	u32 frame_width;
+	u32 total_clocks_for_one_frame;
+};
+
+/**
+ * struct trans_data - MSP transfer data structure used during xfer.
+ * @message: i2s message.
+ * @msp: msp structure.
+ * @tx_handler: callback handler for transmit path.
+ * @rx_handler: callback handler for receive path.
+ * @tx_callback_data: callback data for transmit.
+ * @rx_callback_data: callback data for receive.
+ *
+ */
+struct trans_data {
+	struct i2s_message message;
+	struct msp *msp;
+	void (*tx_handler) (void *data);
+	void (*rx_handler) (void *data);
+	void *tx_callback_data;
+	void *rx_callback_data;
+};
+
+/**
+ * struct msp_config- MSP configuration structure used by i2s client.
+ * @input_clock_freq: Input clock frequency default is 48MHz.
+ * @rx_clock_sel: Receive clock selection (Provided by Sample Gen or external
+ * source).
+ * @tx_clock_sel: Transmit clock selection (Provided by Sample Gen or external.
+ * source).
+ * @srg_clock_sel: APB clock or clock dervied from Slave (Audio codec).
+ * @rx_frame_sync_pol: Receive frame sync polarity.
+ * @tx_frame_sync_pol: Transmit frame sync polarity.
+ * @rx_frame_sync_sel: Rx frame sync signal is provided by which source.
+ * External source or by frame generator logic.
+ * @tx_frame_sync_sel: Tx frame sync signal is provided by which source.
+ * External source or by frame generator logic.
+ * @rx_fifo_config: Receive fifo enable or not.
+ * @tx_fifo_config: Transmit fifo enable or not.
+ * @spi_clk_mode: In case of SPI protocol spi modes: Normal, Zero delay or
+ * half cycle delay.
+ * @spi_burst_mode: Spi burst mode is enabled or not.
+ * @loopback_enable: Loopback mode.
+ * @tx_data_enable: Transmit extra delay enable.
+ * @default_protocol_desc: Flag to indicate client defined protocol desc or
+ * statically defined in msp.h.
+ * @protocol_desc: Protocol desc structure filled by i2s client driver.
+ * In case client defined default_prtocol_desc as 0.
+ * @multichannel_configured: multichannel configuration structure.
+ * @multichannel_config: multichannel is enabled or not.
+ * @direction: Transmit, Receive or Both.
+ * @work_mode: Dma, Polling or Interrupt.
+ * @protocol: I2S, PCM, etc.
+ * @frame_freq: Sampling freq at which data is sampled.
+ * @frame_size: size of element.
+ * @data_size: data size which defines the format in which data is written on
+ * transmit or receive fifo. Only three modes 8,16,32 are supported.
+ * @def_elem_len: Flag to indicate whether default element length is to be used
+ * or should be changed acc to data size defined by user at run time.
+ * @iodelay: value for the MSP_IODLY register
+ * @handler: callback handler in case of interrupt or dma.
+ * @tx_callback_data: Callback data for transmit.
+ * @rx_callback_data: Callback data for receive.
+ *
+ * Main Msp configuration data structure used by i2s client driver to fill
+ * various info like data size, frequency etc.
+ */
+struct msp_config {
+	unsigned int input_clock_freq;
+	unsigned int rx_clock_sel;
+	unsigned int tx_clock_sel;
+	unsigned int srg_clock_sel;
+	unsigned int rx_frame_sync_pol;
+	unsigned int tx_frame_sync_pol;
+	unsigned int rx_frame_sync_sel;
+	unsigned int tx_frame_sync_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_protocol_desc;
+	struct msp_protocol_desc protocol_desc;
+	int multichannel_configured;
+	struct msp_multichannel_config multichannel_config;
+	unsigned int direction;
+	unsigned int work_mode;
+	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;
+
+};
+
+/*** Protocols ***/
+enum msp_protocol {
+	MSP_I2S_PROTOCOL,
+	MSP_PCM_PROTOCOL,
+	MSP_PCM_COMPAND_PROTOCOL,
+	MSP_AC97_PROTOCOL,
+	MSP_MASTER_SPI_PROTOCOL,
+	MSP_SLAVE_SPI_PROTOCOL,
+	MSP_INVALID_PROTOCOL
+};
+
+/*** Sample Frequencies ***/
+/* These are no longer required, frequencies in Hz can be used directly */
+enum msp_sample_freq {
+	MSP_SAMPLE_FREQ_NOT_SUPPORTED = -1,
+	MSP_SAMPLE_FREQ_8KHZ = 8000,
+	MSP_SAMPLE_FREQ_12KHZ = 12000,
+	MSP_SAMPLE_FREQ_16KHZ = 16000,
+	MSP_SAMPLE_FREQ_24KHZ = 24000,
+	MSP_SAMPLE_FREQ_32KHZ = 32000,
+	MSP_SAMPLE_FREQ_44KHZ = 44000,
+	MSP_SAMPLE_FREQ_48KHZ = 48000,
+	MSP_SAMPLE_FREQ_64KHZ = 64000,
+	MSP_SAMPLE_FREQ_88KHZ = 88000,
+	MSP_SAMPLE_FREQ_96KHZ = 96000,
+	MSP_SAMPLE_FREQ_22KHZ = 22000,
+	MSP_SAMPLE_FREQ_11KHZ = 11000
+};
+
+/*** Input Frequencies ***/
+/* These are no longer required, frequencies in Hz can be used directly */
+enum msp_in_clock_freq {
+	MSP_INPUT_FREQ_1MHZ = 1000,
+	MSP_INPUT_FREQ_2MHZ = 2000,
+	MSP_INPUT_FREQ_3MHZ = 3000,
+	MSP_INPUT_FREQ_4MHZ = 4000,
+	MSP_INPUT_FREQ_5MHZ = 5000,
+	MSP_INPUT_FREQ_6MHZ = 6000,
+	MSP_INPUT_FREQ_8MHZ = 8000,
+	MSP_INPUT_FREQ_11MHZ = 11000,
+	MSP_INPUT_FREQ_12MHZ = 12000,
+	MSP_INPUT_FREQ_16MHZ = 16000,
+	MSP_INPUT_FREQ_22MHZ = 22000,
+	MSP_INPUT_FREQ_24MHZ = 24000,
+	MSP_INPUT_FREQ_48MHZ = 48000
+};
+
+#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_TRANSMIT_MODE,
+	MSP_RECEIVE_MODE,
+	MSP_BOTH_T_R_MODE
+};
+
+/* Dma mode should be used for large transfers,
+ * polling mode should be used for transfers of a few bytes
+ */
+enum msp_xfer_mode {
+	MSP_DMA_MODE,
+	MSP_POLLING_MODE,
+	MSP_INTERRUPT_MODE
+};
+
+/* User client for the MSP */
+enum msp_user {
+	MSP_NO_USER = 0,
+	MSP_USER_SPI,
+	MSP_USER_ALSA,
+	MSP_USER_SAA,
+};
+
+/*Flag structure for MSPx*/
+struct msp_flag {
+	struct semaphore lock;
+	enum msp_user user;
+};
+
+/* User client for the MSP */
+enum msp_mode {
+	MSP_NO_MODE = 0,
+	MSP_MODE_SPI,
+	MSP_MODE_NON_SPI,
+};
+
+/* 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
+
+/* SPI Clock Modes enumertion
+ * SPI clock modes of MSP provides compatibility with
+ * the SPI protocol.MSP supports 2 SPI transfer formats.
+ * MSP_ZERO_DELAY_SPI_MODE:MSP transmits data over Tx/Rx
+ * Lines immediately after MSPTCK/MSPRCK rising/falling edge.
+ * MSP_HALF_CYCLE_DELY_SPI_MODE:MSP transmits data  one-half cycle
+ * ahead of the rising/falling edge of the MSPTCK
+ */
+
+#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
+
+/* Single or dual phase mode */
+enum msp_phase_mode {
+	MSP_SINGLE_PHASE,
+	MSP_DUAL_PHASE
+};
+
+/* Frame length */
+enum msp_frame_length {
+	MSP_FRAME_LENGTH_1 = 0,
+	MSP_FRAME_LENGTH_2 = 1,
+	MSP_FRAME_LENGTH_4 = 3,
+	MSP_FRAME_LENGTH_8 = 7,
+	MSP_FRAME_LENGTH_12 = 11,
+	MSP_FRAME_LENGTH_16 = 15,
+	MSP_FRAME_LENGTH_20 = 19,
+	MSP_FRAME_LENGTH_32 = 31,
+	MSP_FRAME_LENGTH_48 = 47,
+	MSP_FRAME_LENGTH_64 = 63
+};
+
+/* Element length */
+enum msp_elem_length {
+	MSP_ELEM_LENGTH_8 = 0,
+	MSP_ELEM_LENGTH_10 = 1,
+	MSP_ELEM_LENGTH_12 = 2,
+	MSP_ELEM_LENGTH_14 = 3,
+	MSP_ELEM_LENGTH_16 = 4,
+	MSP_ELEM_LENGTH_20 = 5,
+	MSP_ELEM_LENGTH_24 = 6,
+	MSP_ELEM_LENGTH_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_FRAME_SYNC_UNIGNORE = 0,
+	MSP_FRAME_SYNC_IGNORE = 1,
+
+};
+
+enum msp_phase2_start_mode {
+	MSP_PHASE2_START_MODE_IMEDIATE,
+	MSP_PHASE2_START_MODE_FRAME_SYNC
+};
+
+enum msp_btf {
+	MSP_BTF_MS_BIT_FIRST = 0,
+	MSP_BTF_LS_BIT_FIRST = 1
+};
+
+enum msp_frame_sync_pol {
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH = 0,
+	MSP_FRAME_SYNC_POL_ACTIVE_LOW = 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_HWS_NO_SWAP = 0,
+	MSP_HWS_BYTE_SWAP_IN_WORD = 1,
+	MSP_HWS_BYTE_SWAP_IN_EACH_HALF_WORD = 2,
+	MSP_HWS_HALF_WORD_SWAP_IN_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_clock_mode {
+	MSP_SPI_CLOCK_MODE_NON_SPI = 0,
+	MSP_SPI_CLOCK_MODE_ZERO_DELAY = 2,
+	MSP_SPI_CLOCK_MODE_HALF_CYCLE_DELAY = 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
+};
+
+/* Protocol dependant parameters list */
+#define RX_ENABLE_MASK         BIT(0)
+#define RX_FIFO_ENABLE_MASK    BIT(1)
+#define RX_FRAME_SYNC_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_FRAME_SYNC_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 MSP_SPI_CLK_MODE_BITS(n) ((n & SPICKM_MASK) << SPICKM_SHIFT)
+
+
+
+/* Use this to clear the clock mode bits to non-spi */
+#define MSP_NON_SPI_CLK_MASK (BIT(22) | BIT(21))
+
+#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 FRAME_SYNC_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 FRAME_SYNC_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_FRAME_SYNC_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_FRAME_SYNC_IGNORE(n) ((n << FRAME_SYNC_SHIFT) & \
+				      FRAME_SYNC_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 RECEIVE_SERVICE_INT         BIT(0)
+#define RECEIVE_OVERRUN_ERROR_INT   BIT(1)
+#define RECEIVE_FRAME_SYNC_ERR_INT  BIT(2)
+#define RECEIVE_FRAME_SYNC_INT      BIT(3)
+#define TRANSMIT_SERVICE_INT        BIT(4)
+#define TRANSMIT_UNDERRUN_ERR_INT   BIT(5)
+#define TRANSMIT_FRAME_SYNC_ERR_INT BIT(6)
+#define TRANSMIT_FRAME_SYNC_INT     BIT(7)
+#define ALL_INT                     0x000000ff
+
+/*
+ *  Protocol configuration values I2S:
+ *  Single phase, 16 bits, 2 words per frame
+ */
+#define I2S_PROTOCOL_DESC				\
+{							\
+	MSP_SINGLE_PHASE,				\
+	MSP_SINGLE_PHASE,				\
+	MSP_PHASE2_START_MODE_IMEDIATE, 		\
+	MSP_PHASE2_START_MODE_IMEDIATE, 		\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_ELEM_LENGTH_32,				\
+	MSP_ELEM_LENGTH_32,				\
+	MSP_ELEM_LENGTH_32,				\
+	MSP_ELEM_LENGTH_32,				\
+	MSP_DELAY_1,					\
+	MSP_DELAY_1,					\
+	MSP_RISING_EDGE,				\
+	MSP_RISING_EDGE,				\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_HWS_NO_SWAP,				\
+	MSP_HWS_NO_SWAP,				\
+	MSP_COMPRESS_MODE_LINEAR,			\
+	MSP_EXPAND_MODE_LINEAR,				\
+	MSP_SPI_CLOCK_MODE_NON_SPI,			\
+	MSP_SPI_BURST_MODE_DISABLE,			\
+	MSP_FRAME_SYNC_IGNORE,			\
+	31,						\
+	15,						\
+	32,						\
+}
+
+#define PCM_PROTOCOL_DESC				\
+{							\
+	MSP_DUAL_PHASE,				\
+	MSP_DUAL_PHASE,				\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_ELEM_LENGTH_16,				\
+	MSP_ELEM_LENGTH_16,				\
+	MSP_ELEM_LENGTH_16,				\
+	MSP_ELEM_LENGTH_16,				\
+	MSP_DELAY_0,					\
+	MSP_DELAY_0,					\
+	MSP_FALLING_EDGE,				\
+	MSP_FALLING_EDGE,				\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_HWS_NO_SWAP,				\
+	MSP_HWS_NO_SWAP,				\
+	MSP_COMPRESS_MODE_LINEAR,			\
+	MSP_EXPAND_MODE_LINEAR,				\
+	MSP_SPI_CLOCK_MODE_NON_SPI,			\
+	MSP_SPI_BURST_MODE_DISABLE,			\
+	MSP_FRAME_SYNC_IGNORE,			\
+	255,						\
+	0,						\
+	256,						\
+}
+
+/* Companded PCM: Single phase, 8 bits, 1 word per frame */
+#define PCM_COMPAND_PROTOCOL_DESC				\
+{							\
+	MSP_SINGLE_PHASE,				\
+	MSP_SINGLE_PHASE,				\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_DELAY_0,					\
+	MSP_DELAY_0,					\
+	MSP_FALLING_EDGE,				\
+	MSP_RISING_EDGE,				\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_HWS_NO_SWAP,				\
+	MSP_HWS_NO_SWAP,				\
+	MSP_COMPRESS_MODE_LINEAR,			\
+	MSP_EXPAND_MODE_LINEAR,				\
+	MSP_SPI_CLOCK_MODE_NON_SPI,			\
+	MSP_SPI_BURST_MODE_DISABLE,			\
+	MSP_FRAME_SYNC_IGNORE,			\
+	255,						\
+	0,						\
+	256,						\
+}
+
+/*
+ * AC97: Double phase, 1 element of 16 bits during first phase,
+ * 12 elements of 20 bits in second phase.
+ */
+#define AC97_PROTOCOL_DESC				\
+{							\
+	MSP_DUAL_PHASE,				\
+	MSP_DUAL_PHASE,				\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_12,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_12,				\
+	MSP_ELEM_LENGTH_16,				\
+	MSP_ELEM_LENGTH_20,				\
+	MSP_ELEM_LENGTH_16,				\
+	MSP_ELEM_LENGTH_20,				\
+	MSP_DELAY_1,					\
+	MSP_DELAY_1,					\
+	MSP_FALLING_EDGE,				\
+	MSP_RISING_EDGE,				\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_HWS_NO_SWAP,				\
+	MSP_HWS_NO_SWAP,				\
+	MSP_COMPRESS_MODE_LINEAR,			\
+	MSP_EXPAND_MODE_LINEAR,				\
+	MSP_SPI_CLOCK_MODE_NON_SPI,			\
+	MSP_SPI_BURST_MODE_DISABLE,			\
+	MSP_FRAME_SYNC_IGNORE,			\
+	255,						\
+	0,						\
+	256,						\
+}
+
+#define SPI_MASTER_PROTOCOL_DESC				\
+{							\
+	MSP_SINGLE_PHASE,				\
+	MSP_SINGLE_PHASE,				\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_DELAY_1,					\
+	MSP_DELAY_1,					\
+	MSP_RISING_EDGE,				\
+	MSP_FALLING_EDGE,				\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_HWS_NO_SWAP,				\
+	MSP_HWS_NO_SWAP,				\
+	MSP_COMPRESS_MODE_LINEAR,			\
+	MSP_EXPAND_MODE_LINEAR,				\
+	MSP_SPI_CLOCK_MODE_NON_SPI,			\
+	MSP_SPI_BURST_MODE_DISABLE,			\
+	MSP_FRAME_SYNC_IGNORE,			\
+	255,						\
+	0,						\
+	256,						\
+}
+
+#define SPI_SLAVE_PROTOCOL_DESC				\
+{							\
+	MSP_SINGLE_PHASE,				\
+	MSP_SINGLE_PHASE,				\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_PHASE2_START_MODE_FRAME_SYNC, 		\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_BTF_MS_BIT_FIRST,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_FRAME_LENGTH_1,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_ELEM_LENGTH_8,				\
+	MSP_DELAY_1,					\
+	MSP_DELAY_1,					\
+	MSP_RISING_EDGE,				\
+	MSP_FALLING_EDGE,				\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_FRAME_SYNC_POL_ACTIVE_HIGH,			\
+	MSP_HWS_NO_SWAP,				\
+	MSP_HWS_NO_SWAP,				\
+	MSP_COMPRESS_MODE_LINEAR,			\
+	MSP_EXPAND_MODE_LINEAR,				\
+	MSP_SPI_CLOCK_MODE_NON_SPI,			\
+	MSP_SPI_BURST_MODE_DISABLE,			\
+	MSP_FRAME_SYNC_IGNORE,			\
+	255,						\
+	0,						\
+	256,						\
+}
+
+#define MSP_FRAME_PERIOD_IN_MONO_MODE 256
+#define MSP_FRAME_PERIOD_IN_STEREO_MODE 32
+#define MSP_FRAME_WIDTH_IN_STEREO_MODE 16
+
+/*
+ * No of registers to backup during
+ * suspend resume
+ */
+#define MAX_MSP_BACKUP_REGS 36
+
+enum enum_i2s_controller {
+	MSP_0_I2S_CONTROLLER = 1,
+	MSP_1_I2S_CONTROLLER,
+	MSP_2_I2S_CONTROLLER,
+	MSP_3_I2S_CONTROLLER,
+};
+
+/**
+ * struct msp - Main msp controller data structure per MSP.
+ * @work_mode: Mode i.e dma, polling or interrupt.
+ * @id: Controller id like MSP1 or MSP2 etc.
+ * @msp_io_error: To indicate error while transferring.
+ * @registers: MSP's register base address.
+ * @actual_data_size: Data size in which data needs to send or receive.
+ * @irq:  MSP's irq number.
+ * @i2s_cont: MSP's Controller's structure pointer created per MSP.
+ * @lock: semaphore lock acquired while configuring msp.
+ * @dma_cfg_tx: TX DMA configuration
+ * @dma_cfg_rx: RX DMA configuration
+ * @tx_pipeid: TX DMA channel
+ * @rx_pipeid: RX DMA channel
+ * @msp_state: Current state of msp.
+ * @read: Function pointer for read, u8_msp_read,u16_msp_read,u32_msp_read.
+ * @write: Function pointer for write, u8_msp_write,u16_msp_write,u32_msp_write.
+ * @transfer: Function pointer for type of transfer i.e dma,polling or interrupt
+ * @xfer_data: MSP's transfer data structure. Contains info about current xfer.
+ * @plat_init: MSP's initialization function.
+ * @plat_exit: MSP's Exit function.
+ * @notify_timer: Timer used in Polling mode to prevent hang.
+ * @polling_flag: Flag used in error handling while polling.
+ * @def_elem_len: Flag indicates whether default elem len to be used in
+ * protocol_desc or not.
+ * @reg_enabled: Flag indicates whether regulator has been enabled or not.
+ * @vape_opp_constraint: 1 if constraint is applied to have vape at 100OPP; 0 otherwise
+ * @infinite: true if an infinite transfer has been configured
+ *
+ * Main Msp private data structure to be used to store various info of a
+ * particular MSP.Longer description
+ */
+struct msp {
+	int work_mode;
+	enum enum_i2s_controller id;
+	int msp_io_error;
+	void __iomem *registers;
+	enum msp_data_size actual_data_size;
+	int irq;
+	struct i2s_controller *i2s_cont;
+	struct semaphore lock;
+	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;
+	void (*read) (struct trans_data *xfer_data);
+	void (*write) (struct trans_data *xfer_data);
+	int (*transfer) (struct msp *msp, struct i2s_message *message);
+	struct trans_data xfer_data;
+	int (*plat_init) (void);
+	int (*plat_exit) (void);
+	struct timer_list notify_timer;
+	int polling_flag;
+	int def_elem_len;
+	struct clk *clk;
+	unsigned int direction;
+	int users;
+	int reg_enabled;
+	int loopback_enable;
+	u32 backup_regs[MAX_MSP_BACKUP_REGS];
+	int vape_opp_constraint;
+	bool infinite;
+};
+
+/**
+ * struct msp_i2s_platform_data - Main msp controller platform data structure.
+ * @id: Controller id like MSP1 or MSP2 etc.
+ * @msp_i2s_dma_rx: RX DMA channel config
+ * @msp_i2s_dma_tx: RX DMA channel config
+ * @msp_i2s_init: MSP's initialization function.
+ * @msp_i2s_exit: MSP's Exit function.
+ * @backup_regs: used for backup registers during suspend resume.
+ *
+ * Platform data structure passed by devices.c file.
+ */
+struct msp_i2s_platform_data {
+	enum enum_i2s_controller id;
+	struct stedma40_chan_cfg *msp_i2s_dma_rx;
+	struct stedma40_chan_cfg *msp_i2s_dma_tx;
+	int (*msp_i2s_init) (void);
+	int (*msp_i2s_exit) (void);
+};
+
+#endif