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Marek Vasutd91a6722011-11-08 23:18:11 +00001/*
2 * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
3 * <armlinux@phytec.de>
4 * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
5 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02006 * SPDX-License-Identifier: GPL-2.0+
Marek Vasutd91a6722011-11-08 23:18:11 +00007 */
8
9#ifndef __MACH_MXS_IOMUX_H__
10#define __MACH_MXS_IOMUX_H__
11
Otavio Salvadoreb299602013-02-23 02:43:08 +000012#ifndef __ASSEMBLY__
13
14#include <asm/types.h>
15
Marek Vasutd91a6722011-11-08 23:18:11 +000016/*
17 * IOMUX/PAD Bit field definitions
18 *
19 * PAD_BANK: 0..2 (3)
20 * PAD_PIN: 3..7 (5)
21 * PAD_MUXSEL: 8..9 (2)
22 * PAD_MA: 10..11 (2)
23 * PAD_MA_VALID: 12 (1)
24 * PAD_VOL: 13 (1)
25 * PAD_VOL_VALID: 14 (1)
26 * PAD_PULL: 15 (1)
27 * PAD_PULL_VALID: 16 (1)
28 * RESERVED: 17..31 (15)
29 */
30typedef u32 iomux_cfg_t;
31
32#define MXS_PAD_BANK_SHIFT 0
33#define MXS_PAD_BANK_MASK ((iomux_cfg_t)0x7 << MXS_PAD_BANK_SHIFT)
34#define MXS_PAD_PIN_SHIFT 3
35#define MXS_PAD_PIN_MASK ((iomux_cfg_t)0x1f << MXS_PAD_PIN_SHIFT)
36#define MXS_PAD_MUXSEL_SHIFT 8
37#define MXS_PAD_MUXSEL_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MUXSEL_SHIFT)
38#define MXS_PAD_MA_SHIFT 10
39#define MXS_PAD_MA_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MA_SHIFT)
40#define MXS_PAD_MA_VALID_SHIFT 12
41#define MXS_PAD_MA_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_MA_VALID_SHIFT)
42#define MXS_PAD_VOL_SHIFT 13
43#define MXS_PAD_VOL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_VOL_SHIFT)
44#define MXS_PAD_VOL_VALID_SHIFT 14
45#define MXS_PAD_VOL_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_VOL_VALID_SHIFT)
46#define MXS_PAD_PULL_SHIFT 15
47#define MXS_PAD_PULL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_SHIFT)
48#define MXS_PAD_PULL_VALID_SHIFT 16
49#define MXS_PAD_PULL_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_VALID_SHIFT)
50
51#define PAD_MUXSEL_0 0
52#define PAD_MUXSEL_1 1
53#define PAD_MUXSEL_2 2
54#define PAD_MUXSEL_GPIO 3
55
56#define PAD_4MA 0
57#define PAD_8MA 1
58#define PAD_12MA 2
59#define PAD_16MA 3
60
61#define PAD_1V8 0
Fabio Estevam9aee34e2013-05-03 04:37:07 +000062#if defined(CONFIG_MX28)
Marek Vasutd91a6722011-11-08 23:18:11 +000063#define PAD_3V3 1
Fabio Estevam9aee34e2013-05-03 04:37:07 +000064#else
65#define PAD_3V3 0
66#endif
Marek Vasutd91a6722011-11-08 23:18:11 +000067
68#define PAD_NOPULL 0
69#define PAD_PULLUP 1
70
71#define MXS_PAD_4MA ((PAD_4MA << MXS_PAD_MA_SHIFT) | \
72 MXS_PAD_MA_VALID_MASK)
73#define MXS_PAD_8MA ((PAD_8MA << MXS_PAD_MA_SHIFT) | \
74 MXS_PAD_MA_VALID_MASK)
75#define MXS_PAD_12MA ((PAD_12MA << MXS_PAD_MA_SHIFT) | \
76 MXS_PAD_MA_VALID_MASK)
77#define MXS_PAD_16MA ((PAD_16MA << MXS_PAD_MA_SHIFT) | \
78 MXS_PAD_MA_VALID_MASK)
79
80#define MXS_PAD_1V8 ((PAD_1V8 << MXS_PAD_VOL_SHIFT) | \
81 MXS_PAD_VOL_VALID_MASK)
82#define MXS_PAD_3V3 ((PAD_3V3 << MXS_PAD_VOL_SHIFT) | \
83 MXS_PAD_VOL_VALID_MASK)
84
85#define MXS_PAD_NOPULL ((PAD_NOPULL << MXS_PAD_PULL_SHIFT) | \
86 MXS_PAD_PULL_VALID_MASK)
87#define MXS_PAD_PULLUP ((PAD_PULLUP << MXS_PAD_PULL_SHIFT) | \
88 MXS_PAD_PULL_VALID_MASK)
89
90/* generic pad control used in most cases */
91#define MXS_PAD_CTRL (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL)
92
93#define MXS_IOMUX_PAD(_bank, _pin, _muxsel, _ma, _vol, _pull) \
94 (((iomux_cfg_t)(_bank) << MXS_PAD_BANK_SHIFT) | \
95 ((iomux_cfg_t)(_pin) << MXS_PAD_PIN_SHIFT) | \
96 ((iomux_cfg_t)(_muxsel) << MXS_PAD_MUXSEL_SHIFT) | \
97 ((iomux_cfg_t)(_ma) << MXS_PAD_MA_SHIFT) | \
98 ((iomux_cfg_t)(_vol) << MXS_PAD_VOL_SHIFT) | \
99 ((iomux_cfg_t)(_pull) << MXS_PAD_PULL_SHIFT))
100
101/*
102 * A pad becomes naked, when none of mA, vol or pull
103 * validity bits is set.
104 */
105#define MXS_IOMUX_PAD_NAKED(_bank, _pin, _muxsel) \
106 MXS_IOMUX_PAD(_bank, _pin, _muxsel, 0, 0, 0)
107
108static inline unsigned int PAD_BANK(iomux_cfg_t pad)
109{
110 return (pad & MXS_PAD_BANK_MASK) >> MXS_PAD_BANK_SHIFT;
111}
112
113static inline unsigned int PAD_PIN(iomux_cfg_t pad)
114{
115 return (pad & MXS_PAD_PIN_MASK) >> MXS_PAD_PIN_SHIFT;
116}
117
118static inline unsigned int PAD_MUXSEL(iomux_cfg_t pad)
119{
120 return (pad & MXS_PAD_MUXSEL_MASK) >> MXS_PAD_MUXSEL_SHIFT;
121}
122
123static inline unsigned int PAD_MA(iomux_cfg_t pad)
124{
125 return (pad & MXS_PAD_MA_MASK) >> MXS_PAD_MA_SHIFT;
126}
127
128static inline unsigned int PAD_MA_VALID(iomux_cfg_t pad)
129{
130 return (pad & MXS_PAD_MA_VALID_MASK) >> MXS_PAD_MA_VALID_SHIFT;
131}
132
133static inline unsigned int PAD_VOL(iomux_cfg_t pad)
134{
135 return (pad & MXS_PAD_VOL_MASK) >> MXS_PAD_VOL_SHIFT;
136}
137
138static inline unsigned int PAD_VOL_VALID(iomux_cfg_t pad)
139{
140 return (pad & MXS_PAD_VOL_VALID_MASK) >> MXS_PAD_VOL_VALID_SHIFT;
141}
142
143static inline unsigned int PAD_PULL(iomux_cfg_t pad)
144{
145 return (pad & MXS_PAD_PULL_MASK) >> MXS_PAD_PULL_SHIFT;
146}
147
148static inline unsigned int PAD_PULL_VALID(iomux_cfg_t pad)
149{
150 return (pad & MXS_PAD_PULL_VALID_MASK) >> MXS_PAD_PULL_VALID_SHIFT;
151}
152
153/*
154 * configures a single pad in the iomuxer
155 */
156int mxs_iomux_setup_pad(iomux_cfg_t pad);
157
158/*
159 * configures multiple pads
160 * convenient way to call the above function with tables
161 */
162int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count);
163
Otavio Salvadoreb299602013-02-23 02:43:08 +0000164#endif /* __ASSEMBLY__ */
Marek Vasutd91a6722011-11-08 23:18:11 +0000165#endif /* __MACH_MXS_IOMUX_H__*/