| /* SPDX-License-Identifier: GPL-2.0+ */ |
| /* |
| * Intel Broadwell I2S driver |
| * |
| * Copyright 2019 Google LLC |
| * |
| * Modified from dc i2s/broadwell/broadwell.h |
| */ |
| |
| #ifndef __BROADWELL_I2S_H__ |
| #define __BROADWELL_I2S_H__ |
| |
| enum { |
| SSP_FIFO_SIZE = 7, |
| }; |
| |
| enum frame_sync_rel_timing_t { |
| NEXT_FRMS_AFTER_END_OF_T4 = 0, |
| NEXT_FRMS_WITH_LSB_PREVIOUS_FRM, |
| }; |
| |
| enum frame_sync_pol_t { |
| SSP_FRMS_ACTIVE_LOW = 0, |
| SSP_FRMS_ACTIVE_HIGH, |
| }; |
| |
| enum end_transfer_state_t { |
| SSP_END_TRANSFER_STATE_LOW = 0, |
| SSP_END_TRANSFER_STATE_PEVIOUS_BIT, |
| }; |
| |
| enum clock_mode_t { |
| /* Data driven (falling), data sampled (rising), idle state (low) */ |
| SCLK_MODE_DDF_DSR_ISL, |
| /* Data driven (rising), data sampled (falling), idle state (low) */ |
| SCLK_MODE_DDR_DSF_ISL, |
| /* Data driven (rising), data sampled (falling), idle state (high) */ |
| SCLK_MODE_DDR_DSF_ISH, |
| /* Data driven (falling), data sampled (rising), idle state (high) */ |
| SCLK_MODE_DDF_DSR_ISH, |
| }; |
| |
| struct i2s_shim_regs { |
| u32 csr; /* 0x00 */ |
| u32 reserved0[29]; /* 0x14 - 0x77 */ |
| u32 clkctl; /* 0x78 */ |
| u32 reserved1; /* 0x7c */ |
| u32 cs2; /* 0x80 */ |
| }; |
| |
| struct broadwell_i2s_regs { |
| u32 sscr0; /* 0x00 */ |
| u32 sscr1; /* 0x04 */ |
| u32 sssr; /* 0x08 */ |
| u32 ssitr; /* 0x0c */ |
| u32 ssdr; /* 0x10 */ |
| u32 reserved0[5]; /* 0x14 - 0x27 */ |
| u32 ssto; /* 0x28 */ |
| u32 sspsp; /* 0x2c */ |
| u32 sstsa; /* 0x30 */ |
| u32 ssrsa; /* 0x34 */ |
| u32 sstss; /* 0x38 */ |
| u32 sscr2; /* 0x40 */ |
| u32 sspsp2; /* 0x44 */ |
| }; |
| |
| /* SHIM Configuration & Status */ |
| enum { |
| /* Low Power Clock Select */ |
| SHIM_CS_LPCS = 1 << 31, |
| /* SSP Force Clock Running */ |
| SHIM_CS_SFCR_SSP1 = 1 << 28, |
| SHIM_CS_SFCR_SSP0 = 1 << 27, |
| /* SSP1 IO Clock Select */ |
| SHIM_CS_S1IOCS = 1 << 23, |
| /* SSP0 IO Clock Select */ |
| SHIM_CS_S0IOCS = 1 << 21, |
| /* Parity Check Enable */ |
| SHIM_CS_PCE = 1 << 15, |
| /* SSP DMA or PIO Mode */ |
| SHIM_CS_SDPM_PIO_SSP1 = 1 << 12, |
| SHIM_CS_SDPM_DMA_SSP1 = 0 << 12, |
| SHIM_CS_SDPM_PIO_SSP0 = 1 << 11, |
| SHIM_CS_SDPM_DMA_SSP0 = 0 << 11, |
| /* Run / Stall */ |
| SHIM_CS_STALL = 1 << 10, |
| /* DSP Clock Select */ |
| SHIM_CS_DCS_DSP320_AF80 = 0 << 4, |
| SHIM_CS_DCS_DSP160_AF80 = 1 << 4, |
| SHIM_CS_DCS_DSP80_AF80 = 2 << 4, |
| SHIM_CS_DCS_DSP320_AF160 = 4 << 4, |
| SHIM_CS_DCS_DSP160_AF160 = 5 << 4, |
| SHIM_CS_DCS_DSP32_AF32 = 6 << 4, |
| SHIM_CS_DCS_MASK = 7 << 4, |
| /* SSP Base Clock Select */ |
| SHIM_CS_SBCS_SSP0_24MHZ = 1 << 3, |
| SHIM_CS_SBCS_SSP0_32MHZ = 0 << 3, |
| SHIM_CS_SBCS_SSP1_24MHZ = 1 << 2, |
| SHIM_CS_SBCS_SSP1_32MHZ = 0 << 2, |
| /* DSP Core Reset */ |
| SHIM_CS_RST = 1 << 1, |
| }; |
| |
| /* SHIM Clock Control */ |
| enum { |
| /* Clock Frequency Change In Progress */ |
| SHIM_CLKCTL_CFCIP = 1 << 31, |
| /* SSP MCLK Output Select */ |
| SHIM_CLKCTL_MCLK_MASK = 0x3, |
| SHIM_CLKCTL_MCLK_SHIFT = 24, |
| SHIM_CLKCTL_MCLK_DISABLED = 0 << 24, |
| SHIM_CLKCTL_MCLK_6MHZ = 1 << 24, |
| SHIM_CLKCTL_MCLK_12MHZ = 2 << 24, |
| SHIM_CLKCTL_MCLK_24MHZ = 3 << 24, |
| /* DSP Core Prevent Local Clock Gating */ |
| SHIM_CLKCTL_DCPLCG = 1 << 18, |
| /* SSP Clock Output Enable */ |
| SHIM_CLKCTL_SCOE_SSP1 = 1 << 17, |
| SHIM_CLKCTL_SCOE_SSP0 = 1 << 16, |
| /* DMA Engine Force Local Clock Gating */ |
| SHIM_CLKCTL_DEFLCGB_DMA1_CGE = 0 << 6, |
| SHIM_CLKCTL_DEFLCGB_DMA1_CGD = 1 << 6, |
| SHIM_CLKCTL_DEFLCGB_DMA0_CGE = 0 << 5, |
| SHIM_CLKCTL_DEFLCGB_DMA0_CGD = 1 << 5, |
| /* SSP Force Local Clock Gating */ |
| SHIM_CLKCTL_SFLCGB_SSP1_CGE = 0 << 1, |
| SHIM_CLKCTL_SFLCGB_SSP1_CGD = 1 << 1, |
| SHIM_CLKCTL_SFLCGB_SSP0_CGE = 0 << 0, |
| SHIM_CLKCTL_SFLCGB_SSP0_CGD = 1 << 0, |
| |
| /* Reserved bits: 30:26, 23:19, 15:7, 4:2 */ |
| SHIM_CLKCTL_RESERVED = 0x1f << 26 | 0x1f << 19 | 0x1ff << 7 | 0x7 << 2, |
| }; |
| |
| /* SSP Status */ |
| enum { |
| /* Bit Count Error */ |
| SSP_SSS_BCE = 1 << 23, |
| /* Clock Sync Statu s*/ |
| SSP_SSS_CSS = 1 << 22, |
| /* Transmit FIFO Underrun */ |
| SSP_SSS_TUR = 1 << 21, |
| /* End Of Chain */ |
| SSP_SSS_EOC = 1 << 20, |
| /* Receiver Time-out Interrupt */ |
| SSP_SSS_TINT = 1 << 19, |
| /* Peripheral Trailing Byte Interrupt */ |
| SSP_SSS_PINT = 1 << 18, |
| /* Received FIFO Level */ |
| SSP_RFL_MASK = 0xf, |
| SSP_RFL_SHIFT = 12, |
| /* Transmit FIFO Level */ |
| SSP_TFL_MASK = 0xf, |
| SSP_TFL_SHIFT = 8, |
| /* Receive FIFO Overrun */ |
| SSP_SSS_ROR = 1 << 7, |
| /* Receive FIFO Service Request */ |
| SSP_SSS_RFS = 1 << 6, |
| /* Transmit FIFO Service Request */ |
| SSP_SSS_TFS = 1 << 5, |
| /* SSP Busy */ |
| SSP_SSS_BSY = 1 << 4, |
| /* Receive FIFO Not Empty */ |
| SSP_SSS_RNE = 1 << 3, |
| /* Transmit FIFO Not Full */ |
| SSP_SSS_TNF = 1 << 2, |
| }; |
| |
| /* SSP Control 0 */ |
| enum { |
| /* Mode */ |
| SSP_SSC0_MODE_NORMAL = 0 << 31, |
| SSP_SSC0_MODE_NETWORK = 1 << 31, |
| /* Audio Clock Select */ |
| SSP_SSC0_ACS_PCH = 0 << 30, |
| /* Frame Rate Divider Control (0-7) */ |
| SSP_SSC0_FRDC_MASK = 0x7, |
| SSP_SSC0_FRDC_SHIFT = 24, |
| SSP_SSC0_FRDC_STEREO = 1 << 24, |
| /* Transmit FIFO Underrun Interrupt Mask */ |
| SSP_SSC0_TIM = 1 << 23, |
| /* Receive FIFO Underrun Interrupt Mask */ |
| SSP_SSC0_RIM = 1 << 22, |
| /* Network Clock Select */ |
| SSP_SSC0_NCS_PCH = 0 << 21, |
| /* Extended Data Size Select */ |
| SSP_SSC0_EDSS = 1 << 20, |
| /* Serial Clock Rate (0-4095) */ |
| SSP_SSC0_SCR_SHIFT = 8, |
| SSP_SSC0_SCR_MASK = 0xfff << SSP_SSC0_SCR_SHIFT, |
| /* Synchronous Serial Port Enable */ |
| SSP_SSC0_SSE = 1 << 7, |
| /* External Clock Select */ |
| SSP_SSC0_ECS_PCH = 0 << 6, |
| /* Frame Format */ |
| SSP_SSC0_FRF_MOTOROLA_SPI = 0 << 4, |
| SSP_SSC0_FRF_TI_SSP = 1 << 4, |
| SSP_SSC0_FRF_NS_MICROWIRE = 2 << 4, |
| SSP_SSC0_FRF_PSP = 3 << 4, |
| /* Data Size Select */ |
| SSP_SSC0_DSS_SHIFT = 0, |
| SSP_SSC0_DSS_MASK = 0xf << SSP_SSC0_DSS_SHIFT, |
| }; |
| |
| /* SSP Control 1 */ |
| enum { |
| /* TXD Tristate Enable on Last Phase */ |
| SSP_SSC1_TTELP = 1 << 31, |
| /* TXD Tristate Enable */ |
| SSP_SSC1_TTE = 1 << 30, |
| /* Enable Bit Count Error Interrupt */ |
| SSP_SSC1_EBCEI = 1 << 29, |
| /* Slave Clock Running */ |
| SSP_SSC1_SCFR = 1 << 28, |
| /* Enable Clock Request A */ |
| SSP_SSC1_ECRA = 1 << 27, |
| /* Enable Clock Request B */ |
| SSP_SSC1_ECRB = 1 << 26, |
| /* SSPCLK Direction */ |
| SSP_SSC1_SCLKDIR_SLAVE = 1 << 25, |
| SSP_SSC1_SCLKDIR_MASTER = 0 << 25, |
| /* SSPFRM Direction */ |
| SSP_SSC1_SFRMDIR_SLAVE = 1 << 24, |
| SSP_SSC1_SFRMDIR_MASTER = 0 << 24, |
| /* Receive without Transmit */ |
| SSP_SSC1_RWOT = 1 << 23, |
| /* Trailing Byte */ |
| SSP_SSC1_TRAIL = 1 << 22, |
| /* DMA Tx Service Request Enable */ |
| SSP_SSC1_TSRE = 1 << 21, |
| /* DMA Rx Service Request Enable */ |
| SSP_SSC1_RSRE = 1 << 20, |
| /* Receiver Timeout Interrupt Enable */ |
| SSP_SSC1_TINTE = 1 << 19, |
| /* Periph. Trailing Byte Int. Enable */ |
| SSP_SSC1_PINTE = 1 << 18, |
| /* Invert Frame Signal */ |
| SSP_SSC1_IFS = 1 << 16, |
| /* Select FIFO for EFWR: test mode */ |
| SSP_SSC1_STRF = 1 << 15, |
| /* Enable FIFO Write/Read: test mode */ |
| SSP_SSC1_EFWR = 1 << 14, |
| /* Receive FIFO Trigger Threshold */ |
| SSP_SSC1_RFT_SHIFT = 10, |
| SSP_SSC1_RFT_MASK = 0xf << SSP_SSC1_RFT_SHIFT, |
| /* Transmit FIFO Trigger Threshold */ |
| SSP_SSC1_TFT_SHIFT = 6, |
| SSP_SSC1_TFT_MASK = 0xf << SSP_SSC1_TFT_SHIFT, |
| /* Microwire Transmit Data Size */ |
| SSP_SSC1_MWDS = 1 << 5, |
| /* Motorola SPI SSPSCLK Phase Setting*/ |
| SSP_SSC1_SPH = 1 << 4, |
| /* Motorola SPI SSPSCLK Polarity */ |
| SSP_SSC1_SPO = 1 << 3, |
| /* Loopback mode: test mode */ |
| SSP_SSC1_LBM = 1 << 2, |
| /* Transmit FIFO Interrupt Enable */ |
| SSP_SSC1_TIE = 1 << 1, |
| /* Receive FIFO Interrupt Enable */ |
| SSP_SSC1_RIE = 1 << 0, |
| |
| SSP_SSC1_RESERVED = 17 << 1, |
| }; |
| |
| /* SSP Programmable Serial Protocol */ |
| enum { |
| /* Extended Dummy Stop (0-31) */ |
| SSP_PSP_EDYMSTOP_SHIFT = 26, |
| SSP_PSP_EDMYSTOP_MASK = 0x7 << SSP_PSP_EDYMSTOP_SHIFT, |
| /* Frame Sync Relative Timing */ |
| SSP_PSP_FSRT = 1 << 25, |
| /* Dummy Stop low bits */ |
| SSP_PSP_DMYSTOP_SHIFT = 23, |
| SSP_PSP_DMYSTOP_MASK = 0x3 << SSP_PSP_DMYSTOP_SHIFT, |
| /* Serial Frame Width */ |
| SSP_PSP_SFRMWDTH_SHIFT = 16, |
| SSP_PSP_SFRMWDTH_MASK = 0x3f << SSP_PSP_SFRMWDTH_SHIFT, |
| /* Serial Frame Delay */ |
| SSP_PSP_SFRMDLY_MASK = 0x7f, |
| SSP_PSP_SFRMDLY_SHIFT = 9, |
| /* Start Delay */ |
| SSP_PSP_STRTDLY_MASK = 0x7, |
| SSP_PSP_STRTDLY_SHIFT = 4, |
| /* End of Transfer Data State */ |
| SSP_PSP_ETDS = 1 << 3, |
| /* Serial Frame Polarity */ |
| SSP_PSP_SFRMP = 1 << 2, |
| /* Serial Clock Mode */ |
| SSP_PSP_SCMODE_SHIFT = 0, |
| SSP_PSP_SCMODE_MASK = 0x3 << SSP_PSP_SCMODE_SHIFT, |
| |
| SSP_PSP_RESERVED = 1 << 22, |
| }; |
| |
| /* SSP TX Time Slot Active */ |
| enum { |
| SSP_SSTSA_EN = 1 << 8, |
| SSP_SSTSA_MASK = 0xff, |
| }; |
| |
| #endif /* __BROADWELL_I2S_H__ */ |