include/linux/sh_pfc.h

   1 /*
   2  * SuperH Pin Function Controller Support
   3  *
   4  * Copyright (c) 2008 Magnus Damm
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10
  11 #ifndef __SH_PFC_H
  12 #define __SH_PFC_H
  13
  14 #include <asm-generic/gpio.h>
  15
  16 typedef unsigned short pinmux_enum_t;
  17 typedef unsigned short pinmux_flag_t;
  18
  19 #define PINMUX_TYPE_NONE            0
  20 #define PINMUX_TYPE_FUNCTION        1
  21 #define PINMUX_TYPE_GPIO            2
  22 #define PINMUX_TYPE_OUTPUT          3
  23 #define PINMUX_TYPE_INPUT           4
  24 #define PINMUX_TYPE_INPUT_PULLUP    5
  25 #define PINMUX_TYPE_INPUT_PULLDOWN  6
  26
  27 #define PINMUX_FLAG_TYPE            (0x7)
  28 #define PINMUX_FLAG_WANT_PULLUP     (1 << 3)
  29 #define PINMUX_FLAG_WANT_PULLDOWN   (1 << 4)
  30
  31 #define PINMUX_FLAG_DBIT_SHIFT      5
  32 #define PINMUX_FLAG_DBIT            (0x1f << PINMUX_FLAG_DBIT_SHIFT)
  33 #define PINMUX_FLAG_DREG_SHIFT      10
  34 #define PINMUX_FLAG_DREG            (0x3f << PINMUX_FLAG_DREG_SHIFT)
  35
  36 struct pinmux_gpio {
  37         pinmux_enum_t enum_id;
  38         pinmux_flag_t flags;
  39 };
  40
  41 #define PINMUX_GPIO(gpio, data_or_mark) [gpio] = { data_or_mark }
  42 #define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
  43
  44 struct pinmux_cfg_reg {
  45         unsigned long reg, reg_width, field_width;
  46         unsigned long *cnt;
  47         pinmux_enum_t *enum_ids;
  48 };
  49
  50 #define PINMUX_CFG_REG(name, r, r_width, f_width) \
  51         .reg = r, .reg_width = r_width, .field_width = f_width,         \
  52         .cnt = (unsigned long [r_width / f_width]) {}, \
  53         .enum_ids = (pinmux_enum_t [(r_width / f_width) * (1 << f_width)]) \
  54
  55 struct pinmux_data_reg {
  56         unsigned long reg, reg_width, reg_shadow;
  57         pinmux_enum_t *enum_ids;
  58 };
  59
  60 #define PINMUX_DATA_REG(name, r, r_width) \
  61         .reg = r, .reg_width = r_width, \
  62         .enum_ids = (pinmux_enum_t [r_width]) \
  63
  64 struct pinmux_irq {
  65         int irq;
  66         pinmux_enum_t *enum_ids;
  67 };
  68
  69 #define PINMUX_IRQ(irq_nr, ids...)                         \
  70         { .irq = irq_nr, .enum_ids = (pinmux_enum_t []) { ids, 0 } }    \
  71
  72 struct pinmux_range {
  73         pinmux_enum_t begin;
  74         pinmux_enum_t end;
  75         pinmux_enum_t force;
  76 };
  77
  78 struct pinmux_info {
  79         char *name;
  80         pinmux_enum_t reserved_id;
  81         struct pinmux_range data;
  82         struct pinmux_range input;
  83         struct pinmux_range input_pd;
  84         struct pinmux_range input_pu;
  85         struct pinmux_range output;
  86         struct pinmux_range mark;
  87         struct pinmux_range function;
  88
  89         unsigned first_gpio, last_gpio;
  90
  91         struct pinmux_gpio *gpios;
  92         struct pinmux_cfg_reg *cfg_regs;
  93         struct pinmux_data_reg *data_regs;
  94
  95         pinmux_enum_t *gpio_data;
  96         unsigned int gpio_data_size;
  97
  98         struct pinmux_irq *gpio_irq;
  99         unsigned int gpio_irq_size;
 100
 101         struct gpio_chip chip;
 102 };
 103
 104 int register_pinmux(struct pinmux_info *pip);
 105 int unregister_pinmux(struct pinmux_info *pip);
 106
 107 /* helper macro for port */
 108 #define PORT_1(fn, pfx, sfx) fn(pfx, sfx)
 109
 110 #define PORT_10(fn, pfx, sfx) \
 111         PORT_1(fn, pfx##0, sfx), PORT_1(fn, pfx##1, sfx),       \
 112         PORT_1(fn, pfx##2, sfx), PORT_1(fn, pfx##3, sfx),       \
 113         PORT_1(fn, pfx##4, sfx), PORT_1(fn, pfx##5, sfx),       \
 114         PORT_1(fn, pfx##6, sfx), PORT_1(fn, pfx##7, sfx),       \
 115         PORT_1(fn, pfx##8, sfx), PORT_1(fn, pfx##9, sfx)
 116
 117 #define PORT_90(fn, pfx, sfx) \
 118         PORT_10(fn, pfx##1, sfx), PORT_10(fn, pfx##2, sfx),     \
 119         PORT_10(fn, pfx##3, sfx), PORT_10(fn, pfx##4, sfx),     \
 120         PORT_10(fn, pfx##5, sfx), PORT_10(fn, pfx##6, sfx),     \
 121         PORT_10(fn, pfx##7, sfx), PORT_10(fn, pfx##8, sfx),     \
 122         PORT_10(fn, pfx##9, sfx)
 123
 124 #define _PORT_ALL(pfx, sfx) pfx##_##sfx
 125 #define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA)
 126 #define PORT_ALL(str)   CPU_ALL_PORT(_PORT_ALL, PORT, str)
 127 #define GPIO_PORT_ALL() CPU_ALL_PORT(_GPIO_PORT, , unused)
 128 #define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK)
 129
 130 /* helper macro for pinmux_enum_t */
 131 #define PORT_DATA_I(nr) \
 132         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN)
 133
 134 #define PORT_DATA_I_PD(nr)      \
 135         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0,    \
 136                     PORT##nr##_IN, PORT##nr##_IN_PD)
 137
 138 #define PORT_DATA_I_PU(nr)      \
 139         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0,    \
 140                     PORT##nr##_IN, PORT##nr##_IN_PU)
 141
 142 #define PORT_DATA_I_PU_PD(nr)   \
 143         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0,                    \
 144                     PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU)
 145
 146 #define PORT_DATA_O(nr)         \
 147         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT)
 148
 149 #define PORT_DATA_IO(nr)        \
 150         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT,    \
 151                     PORT##nr##_IN)
 152
 153 #define PORT_DATA_IO_PD(nr)     \
 154         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT,    \
 155                     PORT##nr##_IN, PORT##nr##_IN_PD)
 156
 157 #define PORT_DATA_IO_PU(nr)     \
 158         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT,    \
 159                     PORT##nr##_IN, PORT##nr##_IN_PU)
 160
 161 #define PORT_DATA_IO_PU_PD(nr)  \
 162         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT,    \
 163                     PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU)
 164
 165 /* helper macro for top 4 bits in PORTnCR */
 166 #define _PCRH(in, in_pd, in_pu, out)    \
 167         0, (out), (in), 0,              \
 168         0, 0, 0, 0,                     \
 169         0, 0, (in_pd), 0,               \
 170         0, 0, (in_pu), 0
 171
 172 #define PORTCR(nr, reg)                                                 \
 173         {                                                               \
 174                 PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) {             \
 175                         _PCRH(PORT##nr##_IN, PORT##nr##_IN_PD,          \
 176                               PORT##nr##_IN_PU, PORT##nr##_OUT),        \
 177                                 PORT##nr##_FN0, PORT##nr##_FN1,         \
 178                                 PORT##nr##_FN2, PORT##nr##_FN3,         \
 179                                 PORT##nr##_FN4, PORT##nr##_FN5,         \
 180                                 PORT##nr##_FN6, PORT##nr##_FN7 }        \
 181         }
 182
 183 #endif /* __SH_PFC_H */