1/* 2 * Register definitions for Atmel Serial Peripheral Interface (SPI) 3 * 4 * Copyright (C) 2006 Atmel Corporation 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10#ifndef __ATMEL_SPI_H__ 11#define __ATMEL_SPI_H__ 12 13/* SPI register offsets */ 14#define SPI_CR 0x0000 15#define SPI_MR 0x0004 16#define SPI_RDR 0x0008 17#define SPI_TDR 0x000c 18#define SPI_SR 0x0010 19#define SPI_IER 0x0014 20#define SPI_IDR 0x0018 21#define SPI_IMR 0x001c 22#define SPI_CSR0 0x0030 23#define SPI_CSR1 0x0034 24#define SPI_CSR2 0x0038 25#define SPI_CSR3 0x003c 26#define SPI_RPR 0x0100 27#define SPI_RCR 0x0104 28#define SPI_TPR 0x0108 29#define SPI_TCR 0x010c 30#define SPI_RNPR 0x0110 31#define SPI_RNCR 0x0114 32#define SPI_TNPR 0x0118 33#define SPI_TNCR 0x011c 34#define SPI_PTCR 0x0120 35#define SPI_PTSR 0x0124 36 37/* Bitfields in CR */ 38#define SPI_SPIEN_OFFSET 0 39#define SPI_SPIEN_SIZE 1 40#define SPI_SPIDIS_OFFSET 1 41#define SPI_SPIDIS_SIZE 1 42#define SPI_SWRST_OFFSET 7 43#define SPI_SWRST_SIZE 1 44#define SPI_LASTXFER_OFFSET 24 45#define SPI_LASTXFER_SIZE 1 46 47/* Bitfields in MR */ 48#define SPI_MSTR_OFFSET 0 49#define SPI_MSTR_SIZE 1 50#define SPI_PS_OFFSET 1 51#define SPI_PS_SIZE 1 52#define SPI_PCSDEC_OFFSET 2 53#define SPI_PCSDEC_SIZE 1 54#define SPI_FDIV_OFFSET 3 55#define SPI_FDIV_SIZE 1 56#define SPI_MODFDIS_OFFSET 4 57#define SPI_MODFDIS_SIZE 1 58#define SPI_LLB_OFFSET 7 59#define SPI_LLB_SIZE 1 60#define SPI_PCS_OFFSET 16 61#define SPI_PCS_SIZE 4 62#define SPI_DLYBCS_OFFSET 24 63#define SPI_DLYBCS_SIZE 8 64 65/* Bitfields in RDR */ 66#define SPI_RD_OFFSET 0 67#define SPI_RD_SIZE 16 68 69/* Bitfields in TDR */ 70#define SPI_TD_OFFSET 0 71#define SPI_TD_SIZE 16 72 73/* Bitfields in SR */ 74#define SPI_RDRF_OFFSET 0 75#define SPI_RDRF_SIZE 1 76#define SPI_TDRE_OFFSET 1 77#define SPI_TDRE_SIZE 1 78#define SPI_MODF_OFFSET 2 79#define SPI_MODF_SIZE 1 80#define SPI_OVRES_OFFSET 3 81#define SPI_OVRES_SIZE 1 82#define SPI_ENDRX_OFFSET 4 83#define SPI_ENDRX_SIZE 1 84#define SPI_ENDTX_OFFSET 5 85#define SPI_ENDTX_SIZE 1 86#define SPI_RXBUFF_OFFSET 6 87#define SPI_RXBUFF_SIZE 1 88#define SPI_TXBUFE_OFFSET 7 89#define SPI_TXBUFE_SIZE 1 90#define SPI_NSSR_OFFSET 8 91#define SPI_NSSR_SIZE 1 92#define SPI_TXEMPTY_OFFSET 9 93#define SPI_TXEMPTY_SIZE 1 94#define SPI_SPIENS_OFFSET 16 95#define SPI_SPIENS_SIZE 1 96 97/* Bitfields in CSR0 */ 98#define SPI_CPOL_OFFSET 0 99#define SPI_CPOL_SIZE 1 100#define SPI_NCPHA_OFFSET 1 101#define SPI_NCPHA_SIZE 1 102#define SPI_CSAAT_OFFSET 3 103#define SPI_CSAAT_SIZE 1 104#define SPI_BITS_OFFSET 4 105#define SPI_BITS_SIZE 4 106#define SPI_SCBR_OFFSET 8 107#define SPI_SCBR_SIZE 8 108#define SPI_DLYBS_OFFSET 16 109#define SPI_DLYBS_SIZE 8 110#define SPI_DLYBCT_OFFSET 24 111#define SPI_DLYBCT_SIZE 8 112 113/* Bitfields in RCR */ 114#define SPI_RXCTR_OFFSET 0 115#define SPI_RXCTR_SIZE 16 116 117/* Bitfields in TCR */ 118#define SPI_TXCTR_OFFSET 0 119#define SPI_TXCTR_SIZE 16 120 121/* Bitfields in RNCR */ 122#define SPI_RXNCR_OFFSET 0 123#define SPI_RXNCR_SIZE 16 124 125/* Bitfields in TNCR */ 126#define SPI_TXNCR_OFFSET 0 127#define SPI_TXNCR_SIZE 16 128 129/* Bitfields in PTCR */ 130#define SPI_RXTEN_OFFSET 0 131#define SPI_RXTEN_SIZE 1 132#define SPI_RXTDIS_OFFSET 1 133#define SPI_RXTDIS_SIZE 1 134#define SPI_TXTEN_OFFSET 8 135#define SPI_TXTEN_SIZE 1 136#define SPI_TXTDIS_OFFSET 9 137#define SPI_TXTDIS_SIZE 1 138 139/* Constants for BITS */ 140#define SPI_BITS_8_BPT 0 141#define SPI_BITS_9_BPT 1 142#define SPI_BITS_10_BPT 2 143#define SPI_BITS_11_BPT 3 144#define SPI_BITS_12_BPT 4 145#define SPI_BITS_13_BPT 5 146#define SPI_BITS_14_BPT 6 147#define SPI_BITS_15_BPT 7 148#define SPI_BITS_16_BPT 8 149 150/* Bit manipulation macros */ 151#define SPI_BIT(name) \ 152 (1 << SPI_##name##_OFFSET) 153#define SPI_BF(name,value) \ 154 (((value) & ((1 << SPI_##name##_SIZE) - 1)) << SPI_##name##_OFFSET) 155#define SPI_BFEXT(name,value) \ 156 (((value) >> SPI_##name##_OFFSET) & ((1 << SPI_##name##_SIZE) - 1)) 157#define SPI_BFINS(name,value,old) \ 158 ( ((old) & ~(((1 << SPI_##name##_SIZE) - 1) << SPI_##name##_OFFSET)) \ 159 | SPI_BF(name,value)) 160 161/* Register access macros */ 162#define spi_readl(port,reg) \ 163 __raw_readl((port)->regs + SPI_##reg) 164#define spi_writel(port,reg,value) \ 165 __raw_writel((value), (port)->regs + SPI_##reg) 166 167#endif /* __ATMEL_SPI_H__ */ 168