drivers/pinctrl/sh-pfc/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 <linux/bug.h>
  15 #include <linux/stringify.h>
  16
  17 enum {
  18         PINMUX_TYPE_NONE,
  19         PINMUX_TYPE_FUNCTION,
  20         PINMUX_TYPE_GPIO,
  21         PINMUX_TYPE_OUTPUT,
  22         PINMUX_TYPE_INPUT,
  23 };
  24
  25 #define SH_PFC_PIN_CFG_INPUT            (1 << 0)
  26 #define SH_PFC_PIN_CFG_OUTPUT           (1 << 1)
  27 #define SH_PFC_PIN_CFG_PULL_UP          (1 << 2)
  28 #define SH_PFC_PIN_CFG_PULL_DOWN        (1 << 3)
  29 #define SH_PFC_PIN_CFG_NO_GPIO          (1 << 31)
  30
  31 struct sh_pfc_pin {
  32         u16 pin;
  33         u16 enum_id;
  34         const char *name;
  35         unsigned int configs;
  36 };
  37
  38 #define SH_PFC_PIN_GROUP(n)                             \
  39         {                                               \
  40                 .name = #n,                             \
  41                 .pins = n##_pins,                       \
  42                 .mux = n##_mux,                         \
  43                 .nr_pins = ARRAY_SIZE(n##_pins),        \
  44         }
  45
  46 struct sh_pfc_pin_group {
  47         const char *name;
  48         const unsigned int *pins;
  49         const unsigned int *mux;
  50         unsigned int nr_pins;
  51 };
  52
  53 #define SH_PFC_FUNCTION(n)                              \
  54         {                                               \
  55                 .name = #n,                             \
  56                 .groups = n##_groups,                   \
  57                 .nr_groups = ARRAY_SIZE(n##_groups),    \
  58         }
  59
  60 struct sh_pfc_function {
  61         const char *name;
  62         const char * const *groups;
  63         unsigned int nr_groups;
  64 };
  65
  66 struct pinmux_func {
  67         u16 enum_id;
  68         const char *name;
  69 };
  70
  71 struct pinmux_cfg_reg {
  72         u32 reg;
  73         u8 reg_width, field_width;
  74         const u16 *enum_ids;
  75         const u8 *var_field_width;
  76 };
  77
  78 #define PINMUX_CFG_REG(name, r, r_width, f_width) \
  79         .reg = r, .reg_width = r_width, .field_width = f_width,         \
  80         .enum_ids = (const u16 [(r_width / f_width) * (1 << f_width)])
  81
  82 #define PINMUX_CFG_REG_VAR(name, r, r_width, var_fw0, var_fwn...) \
  83         .reg = r, .reg_width = r_width, \
  84         .var_field_width = (const u8 [r_width]) \
  85                 { var_fw0, var_fwn, 0 }, \
  86         .enum_ids = (const u16 [])
  87
  88 struct pinmux_data_reg {
  89         u32 reg;
  90         u8 reg_width;
  91         const u16 *enum_ids;
  92 };
  93
  94 #define PINMUX_DATA_REG(name, r, r_width) \
  95         .reg = r, .reg_width = r_width, \
  96         .enum_ids = (const u16 [r_width]) \
  97
  98 struct pinmux_irq {
  99         int irq;
 100         const short *gpios;
 101 };
 102
 103 #ifdef CONFIG_ARCH_MULTIPLATFORM
 104 #define PINMUX_IRQ(irq_nr, ids...)                         \
 105         { .gpios = (const short []) { ids, -1 } }
 106 #else
 107 #define PINMUX_IRQ(irq_nr, ids...)                         \
 108         { .irq = irq_nr, .gpios = (const short []) { ids, -1 } }
 109 #endif
 110
 111 struct pinmux_range {
 112         u16 begin;
 113         u16 end;
 114         u16 force;
 115 };
 116
 117 struct sh_pfc;
 118
 119 struct sh_pfc_soc_operations {
 120         int (*init)(struct sh_pfc *pfc);
 121         unsigned int (*get_bias)(struct sh_pfc *pfc, unsigned int pin);
 122         void (*set_bias)(struct sh_pfc *pfc, unsigned int pin,
 123                          unsigned int bias);
 124 };
 125
 126 struct sh_pfc_soc_info {
 127         const char *name;
 128         const struct sh_pfc_soc_operations *ops;
 129
 130         struct pinmux_range input;
 131         struct pinmux_range output;
 132         struct pinmux_range function;
 133
 134         const struct sh_pfc_pin *pins;
 135         unsigned int nr_pins;
 136         const struct sh_pfc_pin_group *groups;
 137         unsigned int nr_groups;
 138         const struct sh_pfc_function *functions;
 139         unsigned int nr_functions;
 140
 141         const struct pinmux_func *func_gpios;
 142         unsigned int nr_func_gpios;
 143
 144         const struct pinmux_cfg_reg *cfg_regs;
 145         const struct pinmux_data_reg *data_regs;
 146
 147         const u16 *gpio_data;
 148         unsigned int gpio_data_size;
 149
 150         const struct pinmux_irq *gpio_irq;
 151         unsigned int gpio_irq_size;
 152
 153         u32 unlock_reg;
 154 };
 155
 156 /* -----------------------------------------------------------------------------
 157  * Helper macros to create pin and port lists
 158  */
 159
 160 /*
 161  * sh_pfc_soc_info gpio_data array macros
 162  */
 163
 164 #define PINMUX_DATA(data_or_mark, ids...)       data_or_mark, ids, 0
 165
 166 #define PINMUX_IPSR_NOGP(ispr, fn)                                      \
 167         PINMUX_DATA(fn##_MARK, FN_##fn)
 168 #define PINMUX_IPSR_DATA(ipsr, fn)                                      \
 169         PINMUX_DATA(fn##_MARK, FN_##fn, FN_##ipsr)
 170 #define PINMUX_IPSR_NOGM(ispr, fn, ms)                                  \
 171         PINMUX_DATA(fn##_MARK, FN_##fn, FN_##ms)
 172 #define PINMUX_IPSR_NOFN(ipsr, fn, ms)                                  \
 173         PINMUX_DATA(fn##_MARK, FN_##ipsr, FN_##ms)
 174 #define PINMUX_IPSR_MSEL(ipsr, fn, ms)                                  \
 175         PINMUX_DATA(fn##_MARK, FN_##fn, FN_##ipsr, FN_##ms)
 176 #define PINMUX_IPSR_MODSEL_DATA(ipsr, fn, ms)                           \
 177         PINMUX_DATA(fn##_MARK, FN_##ms, FN_##ipsr, FN_##fn)
 178
 179 /*
 180  * GP port style (32 ports banks)
 181  */
 182
 183 #define PORT_GP_1(bank, pin, fn, sfx) fn(bank, pin, GP_##bank##_##pin, sfx)
 184
 185 #define PORT_GP_32(bank, fn, sfx)                                       \
 186         PORT_GP_1(bank, 0,  fn, sfx), PORT_GP_1(bank, 1,  fn, sfx),     \
 187         PORT_GP_1(bank, 2,  fn, sfx), PORT_GP_1(bank, 3,  fn, sfx),     \
 188         PORT_GP_1(bank, 4,  fn, sfx), PORT_GP_1(bank, 5,  fn, sfx),     \
 189         PORT_GP_1(bank, 6,  fn, sfx), PORT_GP_1(bank, 7,  fn, sfx),     \
 190         PORT_GP_1(bank, 8,  fn, sfx), PORT_GP_1(bank, 9,  fn, sfx),     \
 191         PORT_GP_1(bank, 10, fn, sfx), PORT_GP_1(bank, 11, fn, sfx),     \
 192         PORT_GP_1(bank, 12, fn, sfx), PORT_GP_1(bank, 13, fn, sfx),     \
 193         PORT_GP_1(bank, 14, fn, sfx), PORT_GP_1(bank, 15, fn, sfx),     \
 194         PORT_GP_1(bank, 16, fn, sfx), PORT_GP_1(bank, 17, fn, sfx),     \
 195         PORT_GP_1(bank, 18, fn, sfx), PORT_GP_1(bank, 19, fn, sfx),     \
 196         PORT_GP_1(bank, 20, fn, sfx), PORT_GP_1(bank, 21, fn, sfx),     \
 197         PORT_GP_1(bank, 22, fn, sfx), PORT_GP_1(bank, 23, fn, sfx),     \
 198         PORT_GP_1(bank, 24, fn, sfx), PORT_GP_1(bank, 25, fn, sfx),     \
 199         PORT_GP_1(bank, 26, fn, sfx), PORT_GP_1(bank, 27, fn, sfx),     \
 200         PORT_GP_1(bank, 28, fn, sfx), PORT_GP_1(bank, 29, fn, sfx),     \
 201         PORT_GP_1(bank, 30, fn, sfx), PORT_GP_1(bank, 31, fn, sfx)
 202
 203 #define PORT_GP_32_REV(bank, fn, sfx)                                   \
 204         PORT_GP_1(bank, 31, fn, sfx), PORT_GP_1(bank, 30, fn, sfx),     \
 205         PORT_GP_1(bank, 29, fn, sfx), PORT_GP_1(bank, 28, fn, sfx),     \
 206         PORT_GP_1(bank, 27, fn, sfx), PORT_GP_1(bank, 26, fn, sfx),     \
 207         PORT_GP_1(bank, 25, fn, sfx), PORT_GP_1(bank, 24, fn, sfx),     \
 208         PORT_GP_1(bank, 23, fn, sfx), PORT_GP_1(bank, 22, fn, sfx),     \
 209         PORT_GP_1(bank, 21, fn, sfx), PORT_GP_1(bank, 20, fn, sfx),     \
 210         PORT_GP_1(bank, 19, fn, sfx), PORT_GP_1(bank, 18, fn, sfx),     \
 211         PORT_GP_1(bank, 17, fn, sfx), PORT_GP_1(bank, 16, fn, sfx),     \
 212         PORT_GP_1(bank, 15, fn, sfx), PORT_GP_1(bank, 14, fn, sfx),     \
 213         PORT_GP_1(bank, 13, fn, sfx), PORT_GP_1(bank, 12, fn, sfx),     \
 214         PORT_GP_1(bank, 11, fn, sfx), PORT_GP_1(bank, 10, fn, sfx),     \
 215         PORT_GP_1(bank, 9,  fn, sfx), PORT_GP_1(bank, 8,  fn, sfx),     \
 216         PORT_GP_1(bank, 7,  fn, sfx), PORT_GP_1(bank, 6,  fn, sfx),     \
 217         PORT_GP_1(bank, 5,  fn, sfx), PORT_GP_1(bank, 4,  fn, sfx),     \
 218         PORT_GP_1(bank, 3,  fn, sfx), PORT_GP_1(bank, 2,  fn, sfx),     \
 219         PORT_GP_1(bank, 1,  fn, sfx), PORT_GP_1(bank, 0,  fn, sfx)
 220
 221 /* GP_ALL(suffix) - Expand to a list of GP_#_#_suffix */
 222 #define _GP_ALL(bank, pin, name, sfx)   name##_##sfx
 223 #define GP_ALL(str)                     CPU_ALL_PORT(_GP_ALL, str)
 224
 225 /* PINMUX_GPIO_GP_ALL - Expand to a list of sh_pfc_pin entries */
 226 #define _GP_GPIO(bank, _pin, _name, sfx)                                \
 227         {                                                               \
 228                 .pin = (bank * 32) + _pin,                              \
 229                 .name = __stringify(_name),                             \
 230                 .enum_id = _name##_DATA,                                \
 231         }
 232 #define PINMUX_GPIO_GP_ALL()            CPU_ALL_PORT(_GP_GPIO, unused)
 233
 234 /* PINMUX_DATA_GP_ALL -  Expand to a list of name_DATA, name_FN marks */
 235 #define _GP_DATA(bank, pin, name, sfx)  PINMUX_DATA(name##_DATA, name##_FN)
 236 #define PINMUX_DATA_GP_ALL()            CPU_ALL_PORT(_GP_DATA, unused)
 237
 238 /*
 239  * PORT style (linear pin space)
 240  */
 241
 242 #define PORT_1(pn, fn, pfx, sfx) fn(pn, pfx, sfx)
 243
 244 #define PORT_10(pn, fn, pfx, sfx)                                         \
 245         PORT_1(pn,   fn, pfx##0, sfx), PORT_1(pn+1, fn, pfx##1, sfx),     \
 246         PORT_1(pn+2, fn, pfx##2, sfx), PORT_1(pn+3, fn, pfx##3, sfx),     \
 247         PORT_1(pn+4, fn, pfx##4, sfx), PORT_1(pn+5, fn, pfx##5, sfx),     \
 248         PORT_1(pn+6, fn, pfx##6, sfx), PORT_1(pn+7, fn, pfx##7, sfx),     \
 249         PORT_1(pn+8, fn, pfx##8, sfx), PORT_1(pn+9, fn, pfx##9, sfx)
 250
 251 #define PORT_90(pn, fn, pfx, sfx)                                         \
 252         PORT_10(pn+10, fn, pfx##1, sfx), PORT_10(pn+20, fn, pfx##2, sfx), \
 253         PORT_10(pn+30, fn, pfx##3, sfx), PORT_10(pn+40, fn, pfx##4, sfx), \
 254         PORT_10(pn+50, fn, pfx##5, sfx), PORT_10(pn+60, fn, pfx##6, sfx), \
 255         PORT_10(pn+70, fn, pfx##7, sfx), PORT_10(pn+80, fn, pfx##8, sfx), \
 256         PORT_10(pn+90, fn, pfx##9, sfx)
 257
 258 /* PORT_ALL(suffix) - Expand to a list of PORT_#_suffix */
 259 #define _PORT_ALL(pn, pfx, sfx)         pfx##_##sfx
 260 #define PORT_ALL(str)                   CPU_ALL_PORT(_PORT_ALL, PORT, str)
 261
 262 /* PINMUX_GPIO - Expand to a sh_pfc_pin entry */
 263 #define PINMUX_GPIO(_pin)                                               \
 264         [GPIO_##_pin] = {                                               \
 265                 .pin = (u16)-1,                                         \
 266                 .name = __stringify(GPIO_##_pin),                       \
 267                 .enum_id = _pin##_DATA,                                 \
 268         }
 269
 270 /* SH_PFC_PIN_CFG - Expand to a sh_pfc_pin entry (named PORT#) with config */
 271 #define SH_PFC_PIN_CFG(_pin, cfgs)                                      \
 272         {                                                               \
 273                 .pin = _pin,                                            \
 274                 .name = __stringify(PORT##_pin),                        \
 275                 .enum_id = PORT##_pin##_DATA,                           \
 276                 .configs = cfgs,                                        \
 277         }
 278
 279 /* SH_PFC_PIN_NAMED - Expand to a sh_pfc_pin entry with the given name */
 280 #define SH_PFC_PIN_NAMED(row, col, _name)                               \
 281         {                                                               \
 282                 .pin = PIN_NUMBER(row, col),                            \
 283                 .name = __stringify(PIN_##_name),                       \
 284                 .configs = SH_PFC_PIN_CFG_NO_GPIO,                      \
 285         }
 286
 287 /* PINMUX_DATA_ALL - Expand to a list of PORT_name_DATA, PORT_name_FN0,
 288  *                   PORT_name_OUT, PORT_name_IN marks
 289  */
 290 #define _PORT_DATA(pn, pfx, sfx)                                        \
 291         PINMUX_DATA(PORT##pfx##_DATA, PORT##pfx##_FN0,                  \
 292                     PORT##pfx##_OUT, PORT##pfx##_IN)
 293 #define PINMUX_DATA_ALL()               CPU_ALL_PORT(_PORT_DATA, , unused)
 294
 295 /* GPIO_FN(name) - Expand to a sh_pfc_pin entry for a function GPIO */
 296 #define PINMUX_GPIO_FN(gpio, base, data_or_mark)                        \
 297         [gpio - (base)] = {                                             \
 298                 .name = __stringify(gpio),                              \
 299                 .enum_id = data_or_mark,                                \
 300         }
 301 #define GPIO_FN(str)                                                    \
 302         PINMUX_GPIO_FN(GPIO_FN_##str, PINMUX_FN_BASE, str##_MARK)
 303
 304 /*
 305  * PORTnCR macro
 306  */
 307 #define PORTCR(nr, reg)                                                 \
 308         {                                                               \
 309                 PINMUX_CFG_REG_VAR("PORT" nr "CR", reg, 8, 2, 2, 1, 3) {\
 310                         /* PULMD[1:0], handled by .set_bias() */        \
 311                         0, 0, 0, 0,                                     \
 312                         /* IE and OE */                                 \
 313                         0, PORT##nr##_OUT, PORT##nr##_IN, 0,            \
 314                         /* SEC, not supported */                        \
 315                         0, 0,                                           \
 316                         /* PTMD[2:0] */                                 \
 317                         PORT##nr##_FN0, PORT##nr##_FN1,                 \
 318                         PORT##nr##_FN2, PORT##nr##_FN3,                 \
 319                         PORT##nr##_FN4, PORT##nr##_FN5,                 \
 320                         PORT##nr##_FN6, PORT##nr##_FN7                  \
 321                 }                                                       \
 322         }
 323
 324 #endif /* __SH_PFC_H */