include/sh_pfc.h

   1 /*
   2  * SuperH Pin Function Controller Support
   3  * Copy from Linux kernel. (include/linux/sh_pfc.h)
   4  *
   5  * Copyright (c) 2008 Magnus Damm
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11
  12 #ifndef __SH_PFC_H
  13 #define __SH_PFC_H
  14
  15 typedef unsigned short pinmux_enum_t;
  16 typedef unsigned short pinmux_flag_t;
  17
  18 #define PINMUX_TYPE_NONE            0
  19 #define PINMUX_TYPE_FUNCTION        1
  20 #define PINMUX_TYPE_GPIO            2
  21 #define PINMUX_TYPE_OUTPUT          3
  22 #define PINMUX_TYPE_INPUT           4
  23 #define PINMUX_TYPE_INPUT_PULLUP    5
  24 #define PINMUX_TYPE_INPUT_PULLDOWN  6
  25
  26 #define PINMUX_FLAG_TYPE            (0x7)
  27 #define PINMUX_FLAG_WANT_PULLUP     (1 << 3)
  28 #define PINMUX_FLAG_WANT_PULLDOWN   (1 << 4)
  29
  30 #define PINMUX_FLAG_DBIT_SHIFT      5
  31 #define PINMUX_FLAG_DBIT            (0x1f << PINMUX_FLAG_DBIT_SHIFT)
  32 #define PINMUX_FLAG_DREG_SHIFT      10
  33 #define PINMUX_FLAG_DREG            (0x3f << PINMUX_FLAG_DREG_SHIFT)
  34
  35 struct pinmux_gpio {
  36         pinmux_enum_t enum_id;
  37         pinmux_flag_t flags;
  38 };
  39
  40 #define PINMUX_GPIO(gpio, data_or_mark)[gpio] = { data_or_mark }
  41 #define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
  42
  43 struct pinmux_cfg_reg {
  44         unsigned long reg, reg_width, field_width;
  45         unsigned long *cnt;
  46         pinmux_enum_t *enum_ids;
  47         unsigned long *var_field_width;
  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 #define PINMUX_CFG_REG_VAR(name, r, r_width, var_fw0, var_fwn...) \
  56         .reg = r, .reg_width = r_width, \
  57         .cnt = (unsigned long [r_width]) {}, \
  58         .var_field_width = (unsigned long [r_width]) { var_fw0, var_fwn, 0 }, \
  59         .enum_ids = (pinmux_enum_t [])
  60
  61 struct pinmux_data_reg {
  62         unsigned long reg, reg_width, reg_shadow;
  63         pinmux_enum_t *enum_ids;
  64         void *mapped_reg;
  65 };
  66
  67 #define PINMUX_DATA_REG(name, r, r_width) \
  68         .reg = r, .reg_width = r_width, \
  69         .enum_ids = (pinmux_enum_t [r_width]) \
  70
  71 struct pinmux_irq {
  72         int irq;
  73         pinmux_enum_t *enum_ids;
  74 };
  75
  76 #define PINMUX_IRQ(irq_nr, ids...)                         \
  77         { .irq = irq_nr, .enum_ids = (pinmux_enum_t []) { ids, 0 } }    \
  78
  79 struct pinmux_range {
  80         pinmux_enum_t begin;
  81         pinmux_enum_t end;
  82         pinmux_enum_t force;
  83 };
  84
  85 struct pinmux_info {
  86         char *name;
  87         pinmux_enum_t reserved_id;
  88         struct pinmux_range data;
  89         struct pinmux_range input;
  90         struct pinmux_range input_pd;
  91         struct pinmux_range input_pu;
  92         struct pinmux_range output;
  93         struct pinmux_range mark;
  94         struct pinmux_range function;
  95
  96         unsigned first_gpio, last_gpio;
  97
  98         struct pinmux_gpio *gpios;
  99         struct pinmux_cfg_reg *cfg_regs;
 100         struct pinmux_data_reg *data_regs;
 101
 102         pinmux_enum_t *gpio_data;
 103         unsigned int gpio_data_size;
 104
 105         struct pinmux_irq *gpio_irq;
 106         unsigned int gpio_irq_size;
 107
 108         struct resource *resource;
 109         unsigned int num_resources;
 110         unsigned long unlock_reg;
 111 };
 112
 113 int register_pinmux(struct pinmux_info *pip);
 114 int unregister_pinmux(struct pinmux_info *pip);
 115
 116 /* helper macro for port */
 117 #define PORT_1(fn, pfx, sfx) fn(pfx, sfx)
 118
 119 #define PORT_10(fn, pfx, sfx) \
 120         PORT_1(fn, pfx##0, sfx), PORT_1(fn, pfx##1, sfx),       \
 121         PORT_1(fn, pfx##2, sfx), PORT_1(fn, pfx##3, sfx),       \
 122         PORT_1(fn, pfx##4, sfx), PORT_1(fn, pfx##5, sfx),       \
 123         PORT_1(fn, pfx##6, sfx), PORT_1(fn, pfx##7, sfx),       \
 124         PORT_1(fn, pfx##8, sfx), PORT_1(fn, pfx##9, sfx)
 125
 126 #define PORT_90(fn, pfx, sfx) \
 127         PORT_10(fn, pfx##1, sfx), PORT_10(fn, pfx##2, sfx),     \
 128         PORT_10(fn, pfx##3, sfx), PORT_10(fn, pfx##4, sfx),     \
 129         PORT_10(fn, pfx##5, sfx), PORT_10(fn, pfx##6, sfx),     \
 130         PORT_10(fn, pfx##7, sfx), PORT_10(fn, pfx##8, sfx),     \
 131         PORT_10(fn, pfx##9, sfx)
 132
 133 #define _PORT_ALL(pfx, sfx) pfx##_##sfx
 134 #define _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA)
 135 #define PORT_ALL(str)   CPU_ALL_PORT(_PORT_ALL, PORT, str)
 136 #define GPIO_PORT_ALL() CPU_ALL_PORT(_GPIO_PORT, , unused)
 137 #define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK)
 138
 139 /* helper macro for pinmux_enum_t */
 140 #define PORT_DATA_I(nr) \
 141         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN)
 142
 143 #define PORT_DATA_I_PD(nr)      \
 144         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0,    \
 145                     PORT##nr##_IN, PORT##nr##_IN_PD)
 146
 147 #define PORT_DATA_I_PU(nr)      \
 148         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0,    \
 149                     PORT##nr##_IN, PORT##nr##_IN_PU)
 150
 151 #define PORT_DATA_I_PU_PD(nr)   \
 152         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0,                    \
 153                     PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU)
 154
 155 #define PORT_DATA_O(nr)         \
 156         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT)
 157
 158 #define PORT_DATA_IO(nr)        \
 159         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT,    \
 160                     PORT##nr##_IN)
 161
 162 #define PORT_DATA_IO_PD(nr)     \
 163         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT,    \
 164                     PORT##nr##_IN, PORT##nr##_IN_PD)
 165
 166 #define PORT_DATA_IO_PU(nr)     \
 167         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT,    \
 168                     PORT##nr##_IN, PORT##nr##_IN_PU)
 169
 170 #define PORT_DATA_IO_PU_PD(nr)  \
 171         PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT,    \
 172                     PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU)
 173
 174 /* helper macro for top 4 bits in PORTnCR */
 175 #define _PCRH(in, in_pd, in_pu, out)    \
 176         0, (out), (in), 0,              \
 177         0, 0, 0, 0,                     \
 178         0, 0, (in_pd), 0,               \
 179         0, 0, (in_pu), 0
 180
 181 #define PORTCR(nr, reg)                                                 \
 182         {                                                               \
 183                 PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) {             \
 184                         _PCRH(PORT##nr##_IN, PORT##nr##_IN_PD,          \
 185                               PORT##nr##_IN_PU, PORT##nr##_OUT),        \
 186                                 PORT##nr##_FN0, PORT##nr##_FN1,         \
 187                                 PORT##nr##_FN2, PORT##nr##_FN3,         \
 188                                 PORT##nr##_FN4, PORT##nr##_FN5,         \
 189                                 PORT##nr##_FN6, PORT##nr##_FN7 }        \
 190         }
 191
 192 #endif /* __SH_PFC_H */