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