1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH, 4 * <armlinux (at) phytec.de> 5 * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved. 6 */ 7 8 #ifndef __MACH_MXS_IOMUX_H__ 9 #define __MACH_MXS_IOMUX_H__ 10 11 #ifndef __ASSEMBLY__ 12 13 #include <asm/types.h> 14 15 /* 16 * IOMUX/PAD Bit field definitions 17 * 18 * PAD_BANK: 0..2 (3) 19 * PAD_PIN: 3..7 (5) 20 * PAD_MUXSEL: 8..9 (2) 21 * PAD_MA: 10..11 (2) 22 * PAD_MA_VALID: 12 (1) 23 * PAD_VOL: 13 (1) 24 * PAD_VOL_VALID: 14 (1) 25 * PAD_PULL: 15 (1) 26 * PAD_PULL_VALID: 16 (1) 27 * RESERVED: 17..31 (15) 28 */ 29 typedef u32 iomux_cfg_t; 30 31 #define MXS_PAD_BANK_SHIFT 0 32 #define MXS_PAD_BANK_MASK ((iomux_cfg_t)0x7 << MXS_PAD_BANK_SHIFT) 33 #define MXS_PAD_PIN_SHIFT 3 34 #define MXS_PAD_PIN_MASK ((iomux_cfg_t)0x1f << MXS_PAD_PIN_SHIFT) 35 #define MXS_PAD_MUXSEL_SHIFT 8 36 #define MXS_PAD_MUXSEL_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MUXSEL_SHIFT) 37 #define MXS_PAD_MA_SHIFT 10 38 #define MXS_PAD_MA_MASK ((iomux_cfg_t)0x3 << MXS_PAD_MA_SHIFT) 39 #define MXS_PAD_MA_VALID_SHIFT 12 40 #define MXS_PAD_MA_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_MA_VALID_SHIFT) 41 #define MXS_PAD_VOL_SHIFT 13 42 #define MXS_PAD_VOL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_VOL_SHIFT) 43 #define MXS_PAD_VOL_VALID_SHIFT 14 44 #define MXS_PAD_VOL_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_VOL_VALID_SHIFT) 45 #define MXS_PAD_PULL_SHIFT 15 46 #define MXS_PAD_PULL_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_SHIFT) 47 #define MXS_PAD_PULL_VALID_SHIFT 16 48 #define MXS_PAD_PULL_VALID_MASK ((iomux_cfg_t)0x1 << MXS_PAD_PULL_VALID_SHIFT) 49 50 #define PAD_MUXSEL_0 0 51 #define PAD_MUXSEL_1 1 52 #define PAD_MUXSEL_2 2 53 #define PAD_MUXSEL_GPIO 3 54 55 #define PAD_4MA 0 56 #define PAD_8MA 1 57 #define PAD_12MA 2 58 #define PAD_16MA 3 59 60 #define PAD_1V8 0 61 #if defined(CONFIG_MX28) 62 #define PAD_3V3 1 63 #else 64 #define PAD_3V3 0 65 #endif 66 67 #define PAD_NOPULL 0 68 #define PAD_PULLUP 1 69 70 #define MXS_PAD_4MA ((PAD_4MA << MXS_PAD_MA_SHIFT) | \ 71 MXS_PAD_MA_VALID_MASK) 72 #define MXS_PAD_8MA ((PAD_8MA << MXS_PAD_MA_SHIFT) | \ 73 MXS_PAD_MA_VALID_MASK) 74 #define MXS_PAD_12MA ((PAD_12MA << MXS_PAD_MA_SHIFT) | \ 75 MXS_PAD_MA_VALID_MASK) 76 #define MXS_PAD_16MA ((PAD_16MA << MXS_PAD_MA_SHIFT) | \ 77 MXS_PAD_MA_VALID_MASK) 78 79 #define MXS_PAD_1V8 ((PAD_1V8 << MXS_PAD_VOL_SHIFT) | \ 80 MXS_PAD_VOL_VALID_MASK) 81 #define MXS_PAD_3V3 ((PAD_3V3 << MXS_PAD_VOL_SHIFT) | \ 82 MXS_PAD_VOL_VALID_MASK) 83 84 #define MXS_PAD_NOPULL ((PAD_NOPULL << MXS_PAD_PULL_SHIFT) | \ 85 MXS_PAD_PULL_VALID_MASK) 86 #define MXS_PAD_PULLUP ((PAD_PULLUP << MXS_PAD_PULL_SHIFT) | \ 87 MXS_PAD_PULL_VALID_MASK) 88 89 /* generic pad control used in most cases */ 90 #define MXS_PAD_CTRL (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL) 91 92 #define MXS_IOMUX_PAD(_bank, _pin, _muxsel, _ma, _vol, _pull) \ 93 (((iomux_cfg_t)(_bank) << MXS_PAD_BANK_SHIFT) | \ 94 ((iomux_cfg_t)(_pin) << MXS_PAD_PIN_SHIFT) | \ 95 ((iomux_cfg_t)(_muxsel) << MXS_PAD_MUXSEL_SHIFT) | \ 96 ((iomux_cfg_t)(_ma) << MXS_PAD_MA_SHIFT) | \ 97 ((iomux_cfg_t)(_vol) << MXS_PAD_VOL_SHIFT) | \ 98 ((iomux_cfg_t)(_pull) << MXS_PAD_PULL_SHIFT)) 99 100 /* 101 * A pad becomes naked, when none of mA, vol or pull 102 * validity bits is set. 103 */ 104 #define MXS_IOMUX_PAD_NAKED(_bank, _pin, _muxsel) \ 105 MXS_IOMUX_PAD(_bank, _pin, _muxsel, 0, 0, 0) 106 107 static inline unsigned int PAD_BANK(iomux_cfg_t pad) 108 { 109 return (pad & MXS_PAD_BANK_MASK) >> MXS_PAD_BANK_SHIFT; 110 } 111 112 static inline unsigned int PAD_PIN(iomux_cfg_t pad) 113 { 114 return (pad & MXS_PAD_PIN_MASK) >> MXS_PAD_PIN_SHIFT; 115 } 116 117 static inline unsigned int PAD_MUXSEL(iomux_cfg_t pad) 118 { 119 return (pad & MXS_PAD_MUXSEL_MASK) >> MXS_PAD_MUXSEL_SHIFT; 120 } 121 122 static inline unsigned int PAD_MA(iomux_cfg_t pad) 123 { 124 return (pad & MXS_PAD_MA_MASK) >> MXS_PAD_MA_SHIFT; 125 } 126 127 static inline unsigned int PAD_MA_VALID(iomux_cfg_t pad) 128 { 129 return (pad & MXS_PAD_MA_VALID_MASK) >> MXS_PAD_MA_VALID_SHIFT; 130 } 131 132 static inline unsigned int PAD_VOL(iomux_cfg_t pad) 133 { 134 return (pad & MXS_PAD_VOL_MASK) >> MXS_PAD_VOL_SHIFT; 135 } 136 137 static inline unsigned int PAD_VOL_VALID(iomux_cfg_t pad) 138 { 139 return (pad & MXS_PAD_VOL_VALID_MASK) >> MXS_PAD_VOL_VALID_SHIFT; 140 } 141 142 static inline unsigned int PAD_PULL(iomux_cfg_t pad) 143 { 144 return (pad & MXS_PAD_PULL_MASK) >> MXS_PAD_PULL_SHIFT; 145 } 146 147 static inline unsigned int PAD_PULL_VALID(iomux_cfg_t pad) 148 { 149 return (pad & MXS_PAD_PULL_VALID_MASK) >> MXS_PAD_PULL_VALID_SHIFT; 150 } 151 152 /* 153 * configures a single pad in the iomuxer 154 */ 155 int mxs_iomux_setup_pad(iomux_cfg_t pad); 156 157 /* 158 * configures multiple pads 159 * convenient way to call the above function with tables 160 */ 161 int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count); 162 163 #endif /* __ASSEMBLY__ */ 164 #endif /* __MACH_MXS_IOMUX_H__*/ 165
