LXR uboot/arch/arm/include/asm/arch-mxs/iomux.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
   4 *                      <armlinux@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 */
  29typedef 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
 107static inline unsigned int PAD_BANK(iomux_cfg_t pad)
 108{
 109        return (pad & MXS_PAD_BANK_MASK) >> MXS_PAD_BANK_SHIFT;
 110}
 111
 112static inline unsigned int PAD_PIN(iomux_cfg_t pad)
 113{
 114        return (pad & MXS_PAD_PIN_MASK) >> MXS_PAD_PIN_SHIFT;
 115}
 116
 117static inline unsigned int PAD_MUXSEL(iomux_cfg_t pad)
 118{
 119        return (pad & MXS_PAD_MUXSEL_MASK) >> MXS_PAD_MUXSEL_SHIFT;
 120}
 121
 122static inline unsigned int PAD_MA(iomux_cfg_t pad)
 123{
 124        return (pad & MXS_PAD_MA_MASK) >> MXS_PAD_MA_SHIFT;
 125}
 126
 127static 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
 132static inline unsigned int PAD_VOL(iomux_cfg_t pad)
 133{
 134        return (pad & MXS_PAD_VOL_MASK) >> MXS_PAD_VOL_SHIFT;
 135}
 136
 137static 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
 142static inline unsigned int PAD_PULL(iomux_cfg_t pad)
 143{
 144        return (pad & MXS_PAD_PULL_MASK) >> MXS_PAD_PULL_SHIFT;
 145}
 146
 147static 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 */
 155int 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 */
 161int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count);
 162
 163#endif /* __ASSEMBLY__ */
 164#endif /* __MACH_MXS_IOMUX_H__*/
 165