arch/arm/mach-imx/iomux-v3.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
   4  *                      <armlinux@phytec.de>
   5  */
   6
   7 #ifndef __MACH_IOMUX_V3_H__
   8 #define __MACH_IOMUX_V3_H__
   9
  10 /*
  11  *      build IOMUX_PAD structure
  12  *
  13  * This iomux scheme is based around pads, which are the physical balls
  14  * on the processor.
  15  *
  16  * - Each pad has a pad control register (IOMUXC_SW_PAD_CTRL_x) which controls
  17  *   things like driving strength and pullup/pulldown.
  18  * - Each pad can have but not necessarily does have an output routing register
  19  *   (IOMUXC_SW_MUX_CTL_PAD_x).
  20  * - Each pad can have but not necessarily does have an input routing register
  21  *   (IOMUXC_x_SELECT_INPUT)
  22  *
  23  * The three register sets do not have a fixed offset to each other,
  24  * hence we order this table by pad control registers (which all pads
  25  * have) and put the optional i/o routing registers into additional
  26  * fields.
  27  *
  28  * The naming convention for the pad modes is MX35_PAD_<padname>__<padmode>
  29  * If <padname> or <padmode> refers to a GPIO, it is named
  30  * GPIO_<unit>_<num>
  31  *
  32  * IOMUX/PAD Bit field definitions
  33  *
  34  * MUX_CTRL_OFS:            0..11 (12)
  35  * PAD_CTRL_OFS:           12..23 (12)
  36  * SEL_INPUT_OFS:          24..35 (12)
  37  * MUX_MODE + SION:        36..40  (5)
  38  * PAD_CTRL + NO_PAD_CTRL: 41..57 (17)
  39  * SEL_INP:                58..61  (4)
  40  * reserved:                 63    (1)
  41 */
  42
  43 typedef u64 iomux_v3_cfg_t;
  44
  45 #define MUX_CTRL_OFS_SHIFT      0
  46 #define MUX_CTRL_OFS_MASK       ((iomux_v3_cfg_t)0xfff << MUX_CTRL_OFS_SHIFT)
  47 #define MUX_PAD_CTRL_OFS_SHIFT  12
  48 #define MUX_PAD_CTRL_OFS_MASK   ((iomux_v3_cfg_t)0xfff << MUX_PAD_CTRL_OFS_SHIFT)
  49 #define MUX_SEL_INPUT_OFS_SHIFT 24
  50 #define MUX_SEL_INPUT_OFS_MASK  ((iomux_v3_cfg_t)0xfff << MUX_SEL_INPUT_OFS_SHIFT)
  51
  52 #define MUX_MODE_SHIFT          36
  53 #define MUX_MODE_MASK           ((iomux_v3_cfg_t)0x1f << MUX_MODE_SHIFT)
  54 #define MUX_PAD_CTRL_SHIFT      41
  55 #define MUX_PAD_CTRL_MASK       ((iomux_v3_cfg_t)0x1ffff << MUX_PAD_CTRL_SHIFT)
  56 #define MUX_SEL_INPUT_SHIFT     58
  57 #define MUX_SEL_INPUT_MASK      ((iomux_v3_cfg_t)0xf << MUX_SEL_INPUT_SHIFT)
  58
  59 #define MUX_PAD_CTRL(x)         ((iomux_v3_cfg_t)(x) << MUX_PAD_CTRL_SHIFT)
  60
  61 #define IOMUX_PAD(_pad_ctrl_ofs, _mux_ctrl_ofs, _mux_mode, _sel_input_ofs, \
  62                 _sel_input, _pad_ctrl)                                  \
  63         (((iomux_v3_cfg_t)(_mux_ctrl_ofs) << MUX_CTRL_OFS_SHIFT) |      \
  64                 ((iomux_v3_cfg_t)(_mux_mode) << MUX_MODE_SHIFT) |       \
  65                 ((iomux_v3_cfg_t)(_pad_ctrl_ofs) << MUX_PAD_CTRL_OFS_SHIFT) | \
  66                 ((iomux_v3_cfg_t)(_pad_ctrl) << MUX_PAD_CTRL_SHIFT) |   \
  67                 ((iomux_v3_cfg_t)(_sel_input_ofs) << MUX_SEL_INPUT_OFS_SHIFT) | \
  68                 ((iomux_v3_cfg_t)(_sel_input) << MUX_SEL_INPUT_SHIFT))
  69
  70 #define NEW_PAD_CTRL(cfg, pad)  (((cfg) & ~MUX_PAD_CTRL_MASK) | MUX_PAD_CTRL(pad))
  71 /*
  72  * Use to set PAD control
  73  */
  74
  75 #define NO_PAD_CTRL                     (1 << 16)
  76 #define PAD_CTL_DVS                     (1 << 13)
  77 #define PAD_CTL_HYS                     (1 << 8)
  78
  79 #define PAD_CTL_PKE                     (1 << 7)
  80 #define PAD_CTL_PUE                     (1 << 6 | PAD_CTL_PKE)
  81 #define PAD_CTL_PUS_100K_DOWN           (0 << 4 | PAD_CTL_PUE)
  82 #define PAD_CTL_PUS_47K_UP              (1 << 4 | PAD_CTL_PUE)
  83 #define PAD_CTL_PUS_100K_UP             (2 << 4 | PAD_CTL_PUE)
  84 #define PAD_CTL_PUS_22K_UP              (3 << 4 | PAD_CTL_PUE)
  85
  86 #define PAD_CTL_ODE                     (1 << 3)
  87
  88 #define PAD_CTL_DSE_LOW                 (0 << 1)
  89 #define PAD_CTL_DSE_MED                 (1 << 1)
  90 #define PAD_CTL_DSE_HIGH                (2 << 1)
  91 #define PAD_CTL_DSE_MAX                 (3 << 1)
  92
  93 #define PAD_CTL_SRE_FAST                (1 << 0)
  94 #define PAD_CTL_SRE_SLOW                (0 << 0)
  95
  96 #define IOMUX_CONFIG_SION               (0x1 << 4)
  97
  98 #define MX51_NUM_GPIO_PORT      4
  99
 100 #define GPIO_PIN_MASK 0x1f
 101
 102 #define GPIO_PORT_SHIFT 5
 103 #define GPIO_PORT_MASK (0x7 << GPIO_PORT_SHIFT)
 104
 105 #define GPIO_PORTA      (0 << GPIO_PORT_SHIFT)
 106 #define GPIO_PORTB      (1 << GPIO_PORT_SHIFT)
 107 #define GPIO_PORTC      (2 << GPIO_PORT_SHIFT)
 108 #define GPIO_PORTD      (3 << GPIO_PORT_SHIFT)
 109 #define GPIO_PORTE      (4 << GPIO_PORT_SHIFT)
 110 #define GPIO_PORTF      (5 << GPIO_PORT_SHIFT)
 111
 112 /*
 113  * setups a single pad in the iomuxer
 114  */
 115 int mxc_iomux_v3_setup_pad(iomux_v3_cfg_t pad);
 116
 117 /*
 118  * setups multiple pads
 119  * convenient way to call the above function with tables
 120  */
 121 int mxc_iomux_v3_setup_multiple_pads(const iomux_v3_cfg_t *pad_list,
 122                 unsigned count);
 123
 124 /*
 125  * Initialise the iomux controller
 126  */
 127 void mxc_iomux_v3_init(void __iomem *iomux_v3_base);
 128
 129 #endif /* __MACH_IOMUX_V3_H__*/
 130