2 * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
4 * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
6 * SPDX-License-Identifier: GPL-2.0+
9 #ifndef __MACH_MXS_IOMUX_H__
10 #define __MACH_MXS_IOMUX_H__
14 #include <asm/types.h>
17 * IOMUX/PAD Bit field definitions
21 * PAD_MUXSEL: 8..9 (2)
23 * PAD_MA_VALID: 12 (1)
25 * PAD_VOL_VALID: 14 (1)
27 * PAD_PULL_VALID: 16 (1)
28 * RESERVED: 17..30 (14)
29 * sentinel to produce an invalid GPIO number when using an
30 * iomux_cfg_t value where a plain GPIO number is expected
31 * GPIO_SENTINEL: 31 (1)
33 #ifdef CONFIG_MXS_IOMUX_COMPILE_CHECK
34 typedef u64 iomux_cfg_t;
35 #define IOMUX_CFG_SHIFT 32
37 typedef u32 iomux_cfg_t;
38 #define IOMUX_CFG_SHIFT 0
41 #define MXS_PAD_BANK_SHIFT (IOMUX_CFG_SHIFT + 0)
42 #define MXS_PAD_BANK_MASK ((iomux_cfg_t)0x7 << MXS_PAD_BANK_SHIFT)
43 #define MXS_PAD_PIN_SHIFT (IOMUX_CFG_SHIFT + 3)
44 #define MXS_PAD_PIN_MASK ((iomux_cfg_t)0x1f << MXS_PAD_PIN_SHIFT)
45 #define MXS_PAD_MUXSEL_SHIFT (IOMUX_CFG_SHIFT + 8)
46 #define MXS_PAD_MUXSEL_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MUXSEL_SHIFT)
47 #define MXS_PAD_MA_SHIFT (IOMUX_CFG_SHIFT + 10)
48 #define MXS_PAD_MA_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MA_SHIFT)
49 #define MXS_PAD_MA_VALID_SHIFT (IOMUX_CFG_SHIFT + 12)
50 #define MXS_PAD_MA_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_MA_VALID_SHIFT)
51 #define MXS_PAD_VOL_SHIFT (IOMUX_CFG_SHIFT + 13)
52 #define MXS_PAD_VOL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_VOL_SHIFT)
53 #define MXS_PAD_VOL_VALID_SHIFT (IOMUX_CFG_SHIFT + 14)
54 #define MXS_PAD_VOL_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_VOL_VALID_SHIFT)
55 #define MXS_PAD_PULL_SHIFT (IOMUX_CFG_SHIFT + 15)
56 #define MXS_PAD_PULL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_SHIFT)
57 #define MXS_PAD_PULL_VALID_SHIFT (IOMUX_CFG_SHIFT + 16)
58 #define MXS_PAD_PULL_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_VALID_SHIFT)
60 #define MXS_GPIO_SENTINEL_SHIFT (IOMUX_CFG_SHIFT + 31)
61 #define MXS_GPIO_SENTINEL_MASK ((iomux_cfg_t)0x1 << MXS_GPIO_SENTINEL_SHIFT)
63 #define PAD_MUXSEL_0 (iomux_cfg_t)0
64 #define PAD_MUXSEL_1 (iomux_cfg_t)1
65 #define PAD_MUXSEL_2 (iomux_cfg_t)2
66 #define PAD_MUXSEL_GPIO (iomux_cfg_t)3
68 #define PAD_4MA (iomux_cfg_t)0
69 #define PAD_8MA (iomux_cfg_t)1
70 #define PAD_12MA (iomux_cfg_t)2
71 #define PAD_16MA (iomux_cfg_t)3
73 #define PAD_1V8 (iomux_cfg_t)0
74 #if defined(CONFIG_SOC_MX28)
75 #define PAD_3V3 (iomux_cfg_t)1
77 #define PAD_3V3 (iomux_cfg_t)0
80 #define PAD_NOPULL (iomux_cfg_t)0
81 #define PAD_PULLUP (iomux_cfg_t)1
83 #define MXS_PAD_4MA ((PAD_4MA << MXS_PAD_MA_SHIFT) | \
84 MXS_PAD_MA_VALID_MASK)
85 #define MXS_PAD_8MA ((PAD_8MA << MXS_PAD_MA_SHIFT) | \
86 MXS_PAD_MA_VALID_MASK)
87 #define MXS_PAD_12MA ((PAD_12MA << MXS_PAD_MA_SHIFT) | \
88 MXS_PAD_MA_VALID_MASK)
89 #define MXS_PAD_16MA ((PAD_16MA << MXS_PAD_MA_SHIFT) | \
90 MXS_PAD_MA_VALID_MASK)
92 #define MXS_PAD_1V8 ((PAD_1V8 << MXS_PAD_VOL_SHIFT) | \
93 MXS_PAD_VOL_VALID_MASK)
94 #define MXS_PAD_3V3 ((PAD_3V3 << MXS_PAD_VOL_SHIFT) | \
95 MXS_PAD_VOL_VALID_MASK)
97 #define MXS_PAD_NOPULL ((PAD_NOPULL << MXS_PAD_PULL_SHIFT) | \
98 MXS_PAD_PULL_VALID_MASK)
99 #define MXS_PAD_PULLUP ((PAD_PULLUP << MXS_PAD_PULL_SHIFT) | \
100 MXS_PAD_PULL_VALID_MASK)
102 /* generic pad control used in most cases */
103 #define MXS_PAD_CTRL (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL)
105 #define MXS_IOMUX_PAD(_bank, _pin, _muxsel, _ma, _vol, _pull) \
106 (((iomux_cfg_t)(_bank) << MXS_PAD_BANK_SHIFT) | \
107 ((iomux_cfg_t)(_pin) << MXS_PAD_PIN_SHIFT) | \
108 ((iomux_cfg_t)(_muxsel) << MXS_PAD_MUXSEL_SHIFT) | \
109 ((iomux_cfg_t)(_ma) << MXS_PAD_MA_SHIFT) | \
110 ((iomux_cfg_t)(_vol) << MXS_PAD_VOL_SHIFT) | \
111 ((iomux_cfg_t)(_pull) << MXS_PAD_PULL_SHIFT) | \
112 ((iomux_cfg_t)1 << 31))
114 #define MXS_PAD_TO_GPIO(p) ((unsigned)(((((p) & MXS_PAD_BANK_MASK) >> \
115 MXS_PAD_BANK_SHIFT) << 5) | \
116 ((p) & MXS_PAD_PIN_MASK) >> \
120 * A pad becomes naked, when none of mA, vol or pull
121 * validity bits is set.
123 #define MXS_IOMUX_PAD_NAKED(_bank, _pin, _muxsel) \
124 MXS_IOMUX_PAD(_bank, _pin, _muxsel, 0, 0, 0)
126 static inline unsigned int PAD_BANK(iomux_cfg_t pad)
128 return (pad & MXS_PAD_BANK_MASK) >> MXS_PAD_BANK_SHIFT;
131 static inline unsigned int PAD_PIN(iomux_cfg_t pad)
133 return (pad & MXS_PAD_PIN_MASK) >> MXS_PAD_PIN_SHIFT;
136 static inline unsigned int PAD_MUXSEL(iomux_cfg_t pad)
138 return (pad & MXS_PAD_MUXSEL_MASK) >> MXS_PAD_MUXSEL_SHIFT;
141 static inline unsigned int PAD_MA(iomux_cfg_t pad)
143 return (pad & MXS_PAD_MA_MASK) >> MXS_PAD_MA_SHIFT;
146 static inline unsigned int PAD_MA_VALID(iomux_cfg_t pad)
148 return (pad & MXS_PAD_MA_VALID_MASK) >> MXS_PAD_MA_VALID_SHIFT;
151 static inline unsigned int PAD_VOL(iomux_cfg_t pad)
153 return (pad & MXS_PAD_VOL_MASK) >> MXS_PAD_VOL_SHIFT;
156 static inline unsigned int PAD_VOL_VALID(iomux_cfg_t pad)
158 return (pad & MXS_PAD_VOL_VALID_MASK) >> MXS_PAD_VOL_VALID_SHIFT;
161 static inline unsigned int PAD_PULL(iomux_cfg_t pad)
163 return (pad & MXS_PAD_PULL_MASK) >> MXS_PAD_PULL_SHIFT;
166 static inline unsigned int PAD_PULL_VALID(iomux_cfg_t pad)
168 return (pad & MXS_PAD_PULL_VALID_MASK) >> MXS_PAD_PULL_VALID_SHIFT;
172 * configures a single pad in the iomuxer
174 int mxs_iomux_setup_pad(iomux_cfg_t pad);
177 * configures multiple pads
178 * convenient way to call the above function with tables
180 int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count);
182 #endif /* __ASSEMBLY__ */
183 #endif /* __MACH_MXS_IOMUX_H__*/