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Linux kernel mirror (for testing)
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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__ */