| /* |
| * 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> |
| |
| #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); |
| 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; |
| /* Pin modes */ |
| struct pinctrl *pinctrl_p; |
| struct pinctrl_state *pinctrl_def; |
| struct pinctrl_state *pinctrl_sleep; |
| /* Reference Count */ |
| int pinctrl_rxtx_ref; |
| }; |
| |
| struct ux500_msp_dma_params { |
| unsigned int data_size; |
| struct stedma40_chan_cfg *dma_cfg; |
| }; |
| |
| 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 |
