| /* |
| * Analog Devices SPI3 controller driver |
| * |
| * Copyright (c) 2011 Analog Devices Inc. |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #ifndef _SPI_CHANNEL_H_ |
| #define _SPI_CHANNEL_H_ |
| |
| #include <linux/types.h> |
| |
| /* SPI_CONTROL */ |
| #define SPI_CTL_EN 0x00000001 /* Enable */ |
| #define SPI_CTL_MSTR 0x00000002 /* Master/Slave */ |
| #define SPI_CTL_PSSE 0x00000004 /* controls modf error in master mode */ |
| #define SPI_CTL_ODM 0x00000008 /* Open Drain Mode */ |
| #define SPI_CTL_CPHA 0x00000010 /* Clock Phase */ |
| #define SPI_CTL_CPOL 0x00000020 /* Clock Polarity */ |
| #define SPI_CTL_ASSEL 0x00000040 /* Slave Select Pin Control */ |
| #define SPI_CTL_SELST 0x00000080 /* Slave Select Polarity in-between transfers */ |
| #define SPI_CTL_EMISO 0x00000100 /* Enable MISO */ |
| #define SPI_CTL_SIZE 0x00000600 /* Word Transfer Size */ |
| #define SPI_CTL_SIZE08 0x00000000 /* SIZE: 8 bits */ |
| #define SPI_CTL_SIZE16 0x00000200 /* SIZE: 16 bits */ |
| #define SPI_CTL_SIZE32 0x00000400 /* SIZE: 32 bits */ |
| #define SPI_CTL_LSBF 0x00001000 /* LSB First */ |
| #define SPI_CTL_FCEN 0x00002000 /* Flow-Control Enable */ |
| #define SPI_CTL_FCCH 0x00004000 /* Flow-Control Channel Selection */ |
| #define SPI_CTL_FCPL 0x00008000 /* Flow-Control Polarity */ |
| #define SPI_CTL_FCWM 0x00030000 /* Flow-Control Water-Mark */ |
| #define SPI_CTL_FIFO0 0x00000000 /* FCWM: TFIFO empty or RFIFO Full */ |
| #define SPI_CTL_FIFO1 0x00010000 /* FCWM: TFIFO 75% or more empty or RFIFO 75% or more full */ |
| #define SPI_CTL_FIFO2 0x00020000 /* FCWM: TFIFO 50% or more empty or RFIFO 50% or more full */ |
| #define SPI_CTL_FMODE 0x00040000 /* Fast-mode Enable */ |
| #define SPI_CTL_MIOM 0x00300000 /* Multiple I/O Mode */ |
| #define SPI_CTL_MIO_DIS 0x00000000 /* MIOM: Disable */ |
| #define SPI_CTL_MIO_DUAL 0x00100000 /* MIOM: Enable DIOM (Dual I/O Mode) */ |
| #define SPI_CTL_MIO_QUAD 0x00200000 /* MIOM: Enable QUAD (Quad SPI Mode) */ |
| #define SPI_CTL_SOSI 0x00400000 /* Start on MOSI */ |
| /* SPI_RX_CONTROL */ |
| #define SPI_RXCTL_REN 0x00000001 /* Receive Channel Enable */ |
| #define SPI_RXCTL_RTI 0x00000004 /* Receive Transfer Initiate */ |
| #define SPI_RXCTL_RWCEN 0x00000008 /* Receive Word Counter Enable */ |
| #define SPI_RXCTL_RDR 0x00000070 /* Receive Data Request */ |
| #define SPI_RXCTL_RDR_DIS 0x00000000 /* RDR: Disabled */ |
| #define SPI_RXCTL_RDR_NE 0x00000010 /* RDR: RFIFO not empty */ |
| #define SPI_RXCTL_RDR_25 0x00000020 /* RDR: RFIFO 25% full */ |
| #define SPI_RXCTL_RDR_50 0x00000030 /* RDR: RFIFO 50% full */ |
| #define SPI_RXCTL_RDR_75 0x00000040 /* RDR: RFIFO 75% full */ |
| #define SPI_RXCTL_RDR_FULL 0x00000050 /* RDR: RFIFO full */ |
| #define SPI_RXCTL_RDO 0x00000100 /* Receive Data Over-Run */ |
| #define SPI_RXCTL_RRWM 0x00003000 /* FIFO Regular Water-Mark */ |
| #define SPI_RXCTL_RWM_0 0x00000000 /* RRWM: RFIFO Empty */ |
| #define SPI_RXCTL_RWM_25 0x00001000 /* RRWM: RFIFO 25% full */ |
| #define SPI_RXCTL_RWM_50 0x00002000 /* RRWM: RFIFO 50% full */ |
| #define SPI_RXCTL_RWM_75 0x00003000 /* RRWM: RFIFO 75% full */ |
| #define SPI_RXCTL_RUWM 0x00070000 /* FIFO Urgent Water-Mark */ |
| #define SPI_RXCTL_UWM_DIS 0x00000000 /* RUWM: Disabled */ |
| #define SPI_RXCTL_UWM_25 0x00010000 /* RUWM: RFIFO 25% full */ |
| #define SPI_RXCTL_UWM_50 0x00020000 /* RUWM: RFIFO 50% full */ |
| #define SPI_RXCTL_UWM_75 0x00030000 /* RUWM: RFIFO 75% full */ |
| #define SPI_RXCTL_UWM_FULL 0x00040000 /* RUWM: RFIFO full */ |
| /* SPI_TX_CONTROL */ |
| #define SPI_TXCTL_TEN 0x00000001 /* Transmit Channel Enable */ |
| #define SPI_TXCTL_TTI 0x00000004 /* Transmit Transfer Initiate */ |
| #define SPI_TXCTL_TWCEN 0x00000008 /* Transmit Word Counter Enable */ |
| #define SPI_TXCTL_TDR 0x00000070 /* Transmit Data Request */ |
| #define SPI_TXCTL_TDR_DIS 0x00000000 /* TDR: Disabled */ |
| #define SPI_TXCTL_TDR_NF 0x00000010 /* TDR: TFIFO not full */ |
| #define SPI_TXCTL_TDR_25 0x00000020 /* TDR: TFIFO 25% empty */ |
| #define SPI_TXCTL_TDR_50 0x00000030 /* TDR: TFIFO 50% empty */ |
| #define SPI_TXCTL_TDR_75 0x00000040 /* TDR: TFIFO 75% empty */ |
| #define SPI_TXCTL_TDR_EMPTY 0x00000050 /* TDR: TFIFO empty */ |
| #define SPI_TXCTL_TDU 0x00000100 /* Transmit Data Under-Run */ |
| #define SPI_TXCTL_TRWM 0x00003000 /* FIFO Regular Water-Mark */ |
| #define SPI_TXCTL_RWM_FULL 0x00000000 /* TRWM: TFIFO full */ |
| #define SPI_TXCTL_RWM_25 0x00001000 /* TRWM: TFIFO 25% empty */ |
| #define SPI_TXCTL_RWM_50 0x00002000 /* TRWM: TFIFO 50% empty */ |
| #define SPI_TXCTL_RWM_75 0x00003000 /* TRWM: TFIFO 75% empty */ |
| #define SPI_TXCTL_TUWM 0x00070000 /* FIFO Urgent Water-Mark */ |
| #define SPI_TXCTL_UWM_DIS 0x00000000 /* TUWM: Disabled */ |
| #define SPI_TXCTL_UWM_25 0x00010000 /* TUWM: TFIFO 25% empty */ |
| #define SPI_TXCTL_UWM_50 0x00020000 /* TUWM: TFIFO 50% empty */ |
| #define SPI_TXCTL_UWM_75 0x00030000 /* TUWM: TFIFO 75% empty */ |
| #define SPI_TXCTL_UWM_EMPTY 0x00040000 /* TUWM: TFIFO empty */ |
| /* SPI_CLOCK */ |
| #define SPI_CLK_BAUD 0x0000FFFF /* Baud Rate */ |
| /* SPI_DELAY */ |
| #define SPI_DLY_STOP 0x000000FF /* Transfer delay time in multiples of SCK period */ |
| #define SPI_DLY_LEADX 0x00000100 /* Extended (1 SCK) LEAD Control */ |
| #define SPI_DLY_LAGX 0x00000200 /* Extended (1 SCK) LAG control */ |
| /* SPI_SSEL */ |
| #define SPI_SLVSEL_SSE1 0x00000002 /* SPISSEL1 Enable */ |
| #define SPI_SLVSEL_SSE2 0x00000004 /* SPISSEL2 Enable */ |
| #define SPI_SLVSEL_SSE3 0x00000008 /* SPISSEL3 Enable */ |
| #define SPI_SLVSEL_SSE4 0x00000010 /* SPISSEL4 Enable */ |
| #define SPI_SLVSEL_SSE5 0x00000020 /* SPISSEL5 Enable */ |
| #define SPI_SLVSEL_SSE6 0x00000040 /* SPISSEL6 Enable */ |
| #define SPI_SLVSEL_SSE7 0x00000080 /* SPISSEL7 Enable */ |
| #define SPI_SLVSEL_SSEL1 0x00000200 /* SPISSEL1 Value */ |
| #define SPI_SLVSEL_SSEL2 0x00000400 /* SPISSEL2 Value */ |
| #define SPI_SLVSEL_SSEL3 0x00000800 /* SPISSEL3 Value */ |
| #define SPI_SLVSEL_SSEL4 0x00001000 /* SPISSEL4 Value */ |
| #define SPI_SLVSEL_SSEL5 0x00002000 /* SPISSEL5 Value */ |
| #define SPI_SLVSEL_SSEL6 0x00004000 /* SPISSEL6 Value */ |
| #define SPI_SLVSEL_SSEL7 0x00008000 /* SPISSEL7 Value */ |
| /* SPI_RWC */ |
| #define SPI_RWC_VALUE 0x0000FFFF /* Received Word-Count */ |
| /* SPI_RWCR */ |
| #define SPI_RWCR_VALUE 0x0000FFFF /* Received Word-Count Reload */ |
| /* SPI_TWC */ |
| #define SPI_TWC_VALUE 0x0000FFFF /* Transmitted Word-Count */ |
| /* SPI_TWCR */ |
| #define SPI_TWCR_VALUE 0x0000FFFF /* Transmitted Word-Count Reload */ |
| /* SPI_IMASK */ |
| #define SPI_IMSK_RUWM 0x00000002 /* Receive Urgent Water-Mark Interrupt Mask */ |
| #define SPI_IMSK_TUWM 0x00000004 /* Transmit Urgent Water-Mark Interrupt Mask */ |
| #define SPI_IMSK_ROM 0x00000010 /* Receive Over-Run Error Interrupt Mask */ |
| #define SPI_IMSK_TUM 0x00000020 /* Transmit Under-Run Error Interrupt Mask */ |
| #define SPI_IMSK_TCM 0x00000040 /* Transmit Collision Error Interrupt Mask */ |
| #define SPI_IMSK_MFM 0x00000080 /* Mode Fault Error Interrupt Mask */ |
| #define SPI_IMSK_RSM 0x00000100 /* Receive Start Interrupt Mask */ |
| #define SPI_IMSK_TSM 0x00000200 /* Transmit Start Interrupt Mask */ |
| #define SPI_IMSK_RFM 0x00000400 /* Receive Finish Interrupt Mask */ |
| #define SPI_IMSK_TFM 0x00000800 /* Transmit Finish Interrupt Mask */ |
| /* SPI_IMASKCL */ |
| #define SPI_IMSK_CLR_RUW 0x00000002 /* Receive Urgent Water-Mark Interrupt Mask */ |
| #define SPI_IMSK_CLR_TUWM 0x00000004 /* Transmit Urgent Water-Mark Interrupt Mask */ |
| #define SPI_IMSK_CLR_ROM 0x00000010 /* Receive Over-Run Error Interrupt Mask */ |
| #define SPI_IMSK_CLR_TUM 0x00000020 /* Transmit Under-Run Error Interrupt Mask */ |
| #define SPI_IMSK_CLR_TCM 0x00000040 /* Transmit Collision Error Interrupt Mask */ |
| #define SPI_IMSK_CLR_MFM 0x00000080 /* Mode Fault Error Interrupt Mask */ |
| #define SPI_IMSK_CLR_RSM 0x00000100 /* Receive Start Interrupt Mask */ |
| #define SPI_IMSK_CLR_TSM 0x00000200 /* Transmit Start Interrupt Mask */ |
| #define SPI_IMSK_CLR_RFM 0x00000400 /* Receive Finish Interrupt Mask */ |
| #define SPI_IMSK_CLR_TFM 0x00000800 /* Transmit Finish Interrupt Mask */ |
| /* SPI_IMASKST */ |
| #define SPI_IMSK_SET_RUWM 0x00000002 /* Receive Urgent Water-Mark Interrupt Mask */ |
| #define SPI_IMSK_SET_TUWM 0x00000004 /* Transmit Urgent Water-Mark Interrupt Mask */ |
| #define SPI_IMSK_SET_ROM 0x00000010 /* Receive Over-Run Error Interrupt Mask */ |
| #define SPI_IMSK_SET_TUM 0x00000020 /* Transmit Under-Run Error Interrupt Mask */ |
| #define SPI_IMSK_SET_TCM 0x00000040 /* Transmit Collision Error Interrupt Mask */ |
| #define SPI_IMSK_SET_MFM 0x00000080 /* Mode Fault Error Interrupt Mask */ |
| #define SPI_IMSK_SET_RSM 0x00000100 /* Receive Start Interrupt Mask */ |
| #define SPI_IMSK_SET_TSM 0x00000200 /* Transmit Start Interrupt Mask */ |
| #define SPI_IMSK_SET_RFM 0x00000400 /* Receive Finish Interrupt Mask */ |
| #define SPI_IMSK_SET_TFM 0x00000800 /* Transmit Finish Interrupt Mask */ |
| /* SPI_STATUS */ |
| #define SPI_STAT_SPIF 0x00000001 /* SPI Finished */ |
| #define SPI_STAT_RUWM 0x00000002 /* Receive Urgent Water-Mark Breached */ |
| #define SPI_STAT_TUWM 0x00000004 /* Transmit Urgent Water-Mark Breached */ |
| #define SPI_STAT_ROE 0x00000010 /* Receive Over-Run Error Indication */ |
| #define SPI_STAT_TUE 0x00000020 /* Transmit Under-Run Error Indication */ |
| #define SPI_STAT_TCE 0x00000040 /* Transmit Collision Error Indication */ |
| #define SPI_STAT_MODF 0x00000080 /* Mode Fault Error Indication */ |
| #define SPI_STAT_RS 0x00000100 /* Receive Start Indication */ |
| #define SPI_STAT_TS 0x00000200 /* Transmit Start Indication */ |
| #define SPI_STAT_RF 0x00000400 /* Receive Finish Indication */ |
| #define SPI_STAT_TF 0x00000800 /* Transmit Finish Indication */ |
| #define SPI_STAT_RFS 0x00007000 /* SPI_RFIFO status */ |
| #define SPI_STAT_RFIFO_EMPTY 0x00000000 /* RFS: RFIFO Empty */ |
| #define SPI_STAT_RFIFO_25 0x00001000 /* RFS: RFIFO 25% Full */ |
| #define SPI_STAT_RFIFO_50 0x00002000 /* RFS: RFIFO 50% Full */ |
| #define SPI_STAT_RFIFO_75 0x00003000 /* RFS: RFIFO 75% Full */ |
| #define SPI_STAT_RFIFO_FULL 0x00004000 /* RFS: RFIFO Full */ |
| #define SPI_STAT_TFS 0x00070000 /* SPI_TFIFO status */ |
| #define SPI_STAT_TFIFO_FULL 0x00000000 /* TFS: TFIFO full */ |
| #define SPI_STAT_TFIFO_25 0x00010000 /* TFS: TFIFO 25% empty */ |
| #define SPI_STAT_TFIFO_50 0x00020000 /* TFS: TFIFO 50% empty */ |
| #define SPI_STAT_TFIFO_75 0x00030000 /* TFS: TFIFO 75% empty */ |
| #define SPI_STAT_TFIFO_EMPTY 0x00040000 /* TFS: TFIFO empty */ |
| #define SPI_STAT_FCS 0x00100000 /* Flow-Control Stall Indication */ |
| #define SPI_STAT_RFE 0x00400000 /* SPI_RFIFO Empty */ |
| #define SPI_STAT_TFF 0x00800000 /* SPI_TFIFO Full */ |
| /* SPI_ILAT */ |
| #define SPI_ILAT_RUWMI 0x00000002 /* Receive Urgent Water Mark Interrupt */ |
| #define SPI_ILAT_TUWMI 0x00000004 /* Transmit Urgent Water Mark Interrupt */ |
| #define SPI_ILAT_ROI 0x00000010 /* Receive Over-Run Error Indication */ |
| #define SPI_ILAT_TUI 0x00000020 /* Transmit Under-Run Error Indication */ |
| #define SPI_ILAT_TCI 0x00000040 /* Transmit Collision Error Indication */ |
| #define SPI_ILAT_MFI 0x00000080 /* Mode Fault Error Indication */ |
| #define SPI_ILAT_RSI 0x00000100 /* Receive Start Indication */ |
| #define SPI_ILAT_TSI 0x00000200 /* Transmit Start Indication */ |
| #define SPI_ILAT_RFI 0x00000400 /* Receive Finish Indication */ |
| #define SPI_ILAT_TFI 0x00000800 /* Transmit Finish Indication */ |
| /* SPI_ILATCL */ |
| #define SPI_ILAT_CLR_RUWMI 0x00000002 /* Receive Urgent Water Mark Interrupt */ |
| #define SPI_ILAT_CLR_TUWMI 0x00000004 /* Transmit Urgent Water Mark Interrupt */ |
| #define SPI_ILAT_CLR_ROI 0x00000010 /* Receive Over-Run Error Indication */ |
| #define SPI_ILAT_CLR_TUI 0x00000020 /* Transmit Under-Run Error Indication */ |
| #define SPI_ILAT_CLR_TCI 0x00000040 /* Transmit Collision Error Indication */ |
| #define SPI_ILAT_CLR_MFI 0x00000080 /* Mode Fault Error Indication */ |
| #define SPI_ILAT_CLR_RSI 0x00000100 /* Receive Start Indication */ |
| #define SPI_ILAT_CLR_TSI 0x00000200 /* Transmit Start Indication */ |
| #define SPI_ILAT_CLR_RFI 0x00000400 /* Receive Finish Indication */ |
| #define SPI_ILAT_CLR_TFI 0x00000800 /* Transmit Finish Indication */ |
| |
| /* |
| * bfin spi3 registers layout |
| */ |
| struct bfin_spi_regs { |
| u32 revid; |
| u32 control; |
| u32 rx_control; |
| u32 tx_control; |
| u32 clock; |
| u32 delay; |
| u32 ssel; |
| u32 rwc; |
| u32 rwcr; |
| u32 twc; |
| u32 twcr; |
| u32 reserved0; |
| u32 emask; |
| u32 emaskcl; |
| u32 emaskst; |
| u32 reserved1; |
| u32 status; |
| u32 elat; |
| u32 elatcl; |
| u32 reserved2; |
| u32 rfifo; |
| u32 reserved3; |
| u32 tfifo; |
| }; |
| |
| #define MAX_CTRL_CS 8 /* cs in spi controller */ |
| |
| /* device.platform_data for SSP controller devices */ |
| struct bfin_spi3_master { |
| u16 num_chipselect; |
| u16 pin_req[7]; |
| }; |
| |
| /* spi_board_info.controller_data for SPI slave devices, |
| * copied to spi_device.platform_data ... mostly for dma tuning |
| */ |
| struct bfin_spi3_chip { |
| u32 control; |
| u16 cs_chg_udelay; /* Some devices require 16-bit delays */ |
| u32 tx_dummy_val; /* tx value for rx only transfer */ |
| bool enable_dma; |
| }; |
| |
| #endif /* _SPI_CHANNEL_H_ */ |
