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
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