--- /dev/null
+/*
+ * 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 <linux/platform_data/asoc-ux500-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_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 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 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 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;
+ enum msp_data_size data_size;
+ unsigned int def_elem_len;
+ unsigned int iodelay;
+};
+
+struct ux500_msp_dma_params {
+ unsigned int data_size;
+ dma_addr_t tx_rx_addr;
+ struct stedma40_chan_cfg *dma_cfg;
+};
+
+struct ux500_msp {
+ int id;
+ void __iomem *registers;
+ struct device *dev;
+ struct ux500_msp_dma_params playback_dma_data;
+ struct ux500_msp_dma_params capture_dma_data;
+ enum msp_state msp_state;
+ int def_elem_len;
+ unsigned int dir_busy;
+ int loopback_enable;
+ unsigned int f_bitclk;
+};
+
+struct msp_i2s_platform_data;
+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
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