target/linux/brcm63xx/patches-4.14/382-pinctrl-add-a-pincontrol-driver-for-BCM6318.patch

   1 From bd9c250ef85e6f99aa5d59b21abb87d0a48f2f61 Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jonas.gorski@gmail.com>
   3 Date: Fri, 24 Jun 2016 22:20:39 +0200
   4 Subject: [PATCH 15/16] pinctrl: add a pincontrol driver for BCM6318
   5
   6 Add a pincontrol driver for BCM6318. BCM6318 allows muxing most GPIOs
   7 to different functions. BCM6318 is similar to BCM6328 with the addition
   8 of a pad register, and the GPIO meaning of the mux register changes
   9 based on the GPIO number.
  10
  11 Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
  12 ---
  13  drivers/pinctrl/bcm63xx/Kconfig           |   7 +
  14  drivers/pinctrl/bcm63xx/Makefile          |   1 +
  15  drivers/pinctrl/bcm63xx/pinctrl-bcm6318.c | 564 ++++++++++++++++++++++++++++++
  16  3 files changed, 572 insertions(+)
  17  create mode 100644 drivers/pinctrl/bcm63xx/pinctrl-bcm6318.c
  18
  19 --- a/drivers/pinctrl/bcm63xx/Kconfig
  20 +++ b/drivers/pinctrl/bcm63xx/Kconfig
  21 @@ -2,6 +2,13 @@ config PINCTRL_BCM63XX
  22         bool
  23         select GPIO_GENERIC
  24
  25 +config PINCTRL_BCM6318
  26 +       bool "BCM6318 pincontrol driver" if COMPILE_TEST
  27 +       select PINMUX
  28 +       select PINCONF
  29 +       select PINCTRL_BCM63XX
  30 +       select GENERIC_PINCONF
  31 +
  32  config PINCTRL_BCM6328
  33         bool "BCM6328 pincontrol driver" if COMPILE_TEST
  34         select PINMUX
  35 --- a/drivers/pinctrl/bcm63xx/Makefile
  36 +++ b/drivers/pinctrl/bcm63xx/Makefile
  37 @@ -1,4 +1,5 @@
  38  obj-$(CONFIG_PINCTRL_BCM63XX)  += pinctrl-bcm63xx.o
  39 +obj-$(CONFIG_PINCTRL_BCM6318)  += pinctrl-bcm6318.o
  40  obj-$(CONFIG_PINCTRL_BCM6328)  += pinctrl-bcm6328.o
  41  obj-$(CONFIG_PINCTRL_BCM6348)  += pinctrl-bcm6348.o
  42  obj-$(CONFIG_PINCTRL_BCM6358)  += pinctrl-bcm6358.o
  43 --- /dev/null
  44 +++ b/drivers/pinctrl/bcm63xx/pinctrl-bcm6318.c
  45 @@ -0,0 +1,564 @@
  46 +/*
  47 + * This file is subject to the terms and conditions of the GNU General Public
  48 + * License.  See the file "COPYING" in the main directory of this archive
  49 + * for more details.
  50 + *
  51 + * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com>
  52 + */
  53 +
  54 +#include <linux/kernel.h>
  55 +#include <linux/spinlock.h>
  56 +#include <linux/bitops.h>
  57 +#include <linux/gpio.h>
  58 +#include <linux/gpio/driver.h>
  59 +#include <linux/of.h>
  60 +#include <linux/of_gpio.h>
  61 +#include <linux/slab.h>
  62 +#include <linux/platform_device.h>
  63 +
  64 +#include <linux/pinctrl/pinconf.h>
  65 +#include <linux/pinctrl/pinconf-generic.h>
  66 +#include <linux/pinctrl/pinmux.h>
  67 +#include <linux/pinctrl/machine.h>
  68 +
  69 +#include "../core.h"
  70 +#include "../pinctrl-utils.h"
  71 +
  72 +#include "pinctrl-bcm63xx.h"
  73 +
  74 +#define BCM6318_NGPIO          50
  75 +
  76 +struct bcm6318_pingroup {
  77 +       const char *name;
  78 +       const unsigned * const pins;
  79 +       const unsigned num_pins;
  80 +};
  81 +
  82 +struct bcm6318_function {
  83 +       const char *name;
  84 +       const char * const *groups;
  85 +       const unsigned num_groups;
  86 +
  87 +       unsigned mode_val:1;
  88 +       unsigned mux_val:2;
  89 +};
  90 +
  91 +struct bcm6318_pinctrl {
  92 +       struct pinctrl_dev *pctldev;
  93 +       struct pinctrl_desc desc;
  94 +
  95 +       void __iomem *mode;
  96 +       void __iomem *mux[3];
  97 +       void __iomem *pad[6];
  98 +
  99 +       /* register access lock */
 100 +       spinlock_t lock;
 101 +
 102 +       struct gpio_chip gpio[2];
 103 +};
 104 +
 105 +static const struct pinctrl_pin_desc bcm6318_pins[] = {
 106 +       PINCTRL_PIN(0, "gpio0"),
 107 +       PINCTRL_PIN(1, "gpio1"),
 108 +       PINCTRL_PIN(2, "gpio2"),
 109 +       PINCTRL_PIN(3, "gpio3"),
 110 +       PINCTRL_PIN(4, "gpio4"),
 111 +       PINCTRL_PIN(5, "gpio5"),
 112 +       PINCTRL_PIN(6, "gpio6"),
 113 +       PINCTRL_PIN(7, "gpio7"),
 114 +       PINCTRL_PIN(8, "gpio8"),
 115 +       PINCTRL_PIN(9, "gpio9"),
 116 +       PINCTRL_PIN(10, "gpio10"),
 117 +       PINCTRL_PIN(11, "gpio11"),
 118 +       PINCTRL_PIN(12, "gpio12"),
 119 +       PINCTRL_PIN(13, "gpio13"),
 120 +       PINCTRL_PIN(14, "gpio14"),
 121 +       PINCTRL_PIN(15, "gpio15"),
 122 +       PINCTRL_PIN(16, "gpio16"),
 123 +       PINCTRL_PIN(17, "gpio17"),
 124 +       PINCTRL_PIN(18, "gpio18"),
 125 +       PINCTRL_PIN(19, "gpio19"),
 126 +       PINCTRL_PIN(20, "gpio20"),
 127 +       PINCTRL_PIN(21, "gpio21"),
 128 +       PINCTRL_PIN(22, "gpio22"),
 129 +       PINCTRL_PIN(23, "gpio23"),
 130 +       PINCTRL_PIN(24, "gpio24"),
 131 +       PINCTRL_PIN(25, "gpio25"),
 132 +       PINCTRL_PIN(26, "gpio26"),
 133 +       PINCTRL_PIN(27, "gpio27"),
 134 +       PINCTRL_PIN(28, "gpio28"),
 135 +       PINCTRL_PIN(29, "gpio29"),
 136 +       PINCTRL_PIN(30, "gpio30"),
 137 +       PINCTRL_PIN(31, "gpio31"),
 138 +       PINCTRL_PIN(32, "gpio32"),
 139 +       PINCTRL_PIN(33, "gpio33"),
 140 +       PINCTRL_PIN(34, "gpio34"),
 141 +       PINCTRL_PIN(35, "gpio35"),
 142 +       PINCTRL_PIN(36, "gpio36"),
 143 +       PINCTRL_PIN(37, "gpio37"),
 144 +       PINCTRL_PIN(38, "gpio38"),
 145 +       PINCTRL_PIN(39, "gpio39"),
 146 +       PINCTRL_PIN(40, "gpio40"),
 147 +       PINCTRL_PIN(41, "gpio41"),
 148 +       PINCTRL_PIN(42, "gpio42"),
 149 +       PINCTRL_PIN(43, "gpio43"),
 150 +       PINCTRL_PIN(44, "gpio44"),
 151 +       PINCTRL_PIN(45, "gpio45"),
 152 +       PINCTRL_PIN(46, "gpio46"),
 153 +       PINCTRL_PIN(47, "gpio47"),
 154 +       PINCTRL_PIN(48, "gpio48"),
 155 +       PINCTRL_PIN(49, "gpio49"),
 156 +};
 157 +
 158 +static unsigned gpio0_pins[] = { 0 };
 159 +static unsigned gpio1_pins[] = { 1 };
 160 +static unsigned gpio2_pins[] = { 2 };
 161 +static unsigned gpio3_pins[] = { 3 };
 162 +static unsigned gpio4_pins[] = { 4 };
 163 +static unsigned gpio5_pins[] = { 5 };
 164 +static unsigned gpio6_pins[] = { 6 };
 165 +static unsigned gpio7_pins[] = { 7 };
 166 +static unsigned gpio8_pins[] = { 8 };
 167 +static unsigned gpio9_pins[] = { 9 };
 168 +static unsigned gpio10_pins[] = { 10 };
 169 +static unsigned gpio11_pins[] = { 11 };
 170 +static unsigned gpio12_pins[] = { 12 };
 171 +static unsigned gpio13_pins[] = { 13 };
 172 +static unsigned gpio14_pins[] = { 14 };
 173 +static unsigned gpio15_pins[] = { 15 };
 174 +static unsigned gpio16_pins[] = { 16 };
 175 +static unsigned gpio17_pins[] = { 17 };
 176 +static unsigned gpio18_pins[] = { 18 };
 177 +static unsigned gpio19_pins[] = { 19 };
 178 +static unsigned gpio20_pins[] = { 20 };
 179 +static unsigned gpio21_pins[] = { 21 };
 180 +static unsigned gpio22_pins[] = { 22 };
 181 +static unsigned gpio23_pins[] = { 23 };
 182 +static unsigned gpio24_pins[] = { 24 };
 183 +static unsigned gpio25_pins[] = { 25 };
 184 +static unsigned gpio26_pins[] = { 26 };
 185 +static unsigned gpio27_pins[] = { 27 };
 186 +static unsigned gpio28_pins[] = { 28 };
 187 +static unsigned gpio29_pins[] = { 29 };
 188 +static unsigned gpio30_pins[] = { 30 };
 189 +static unsigned gpio31_pins[] = { 31 };
 190 +static unsigned gpio32_pins[] = { 32 };
 191 +static unsigned gpio33_pins[] = { 33 };
 192 +static unsigned gpio34_pins[] = { 34 };
 193 +static unsigned gpio35_pins[] = { 35 };
 194 +static unsigned gpio36_pins[] = { 36 };
 195 +static unsigned gpio37_pins[] = { 37 };
 196 +static unsigned gpio38_pins[] = { 38 };
 197 +static unsigned gpio39_pins[] = { 39 };
 198 +static unsigned gpio40_pins[] = { 40 };
 199 +static unsigned gpio41_pins[] = { 41 };
 200 +static unsigned gpio42_pins[] = { 42 };
 201 +static unsigned gpio43_pins[] = { 43 };
 202 +static unsigned gpio44_pins[] = { 44 };
 203 +static unsigned gpio45_pins[] = { 45 };
 204 +static unsigned gpio46_pins[] = { 46 };
 205 +static unsigned gpio47_pins[] = { 47 };
 206 +static unsigned gpio48_pins[] = { 48 };
 207 +static unsigned gpio49_pins[] = { 49 };
 208 +
 209 +#define BCM6318_GROUP(n)                                       \
 210 +       {                                                       \
 211 +               .name = #n,                                     \
 212 +               .pins = n##_pins,                               \
 213 +               .num_pins = ARRAY_SIZE(n##_pins),               \
 214 +       }
 215 +
 216 +static struct bcm6318_pingroup bcm6318_groups[] = {
 217 +       BCM6318_GROUP(gpio0),
 218 +       BCM6318_GROUP(gpio1),
 219 +       BCM6318_GROUP(gpio2),
 220 +       BCM6318_GROUP(gpio3),
 221 +       BCM6318_GROUP(gpio4),
 222 +       BCM6318_GROUP(gpio5),
 223 +       BCM6318_GROUP(gpio6),
 224 +       BCM6318_GROUP(gpio7),
 225 +       BCM6318_GROUP(gpio8),
 226 +       BCM6318_GROUP(gpio9),
 227 +       BCM6318_GROUP(gpio10),
 228 +       BCM6318_GROUP(gpio11),
 229 +       BCM6318_GROUP(gpio12),
 230 +       BCM6318_GROUP(gpio13),
 231 +       BCM6318_GROUP(gpio14),
 232 +       BCM6318_GROUP(gpio15),
 233 +       BCM6318_GROUP(gpio16),
 234 +       BCM6318_GROUP(gpio17),
 235 +       BCM6318_GROUP(gpio18),
 236 +       BCM6318_GROUP(gpio19),
 237 +       BCM6318_GROUP(gpio20),
 238 +       BCM6318_GROUP(gpio21),
 239 +       BCM6318_GROUP(gpio22),
 240 +       BCM6318_GROUP(gpio23),
 241 +       BCM6318_GROUP(gpio24),
 242 +       BCM6318_GROUP(gpio25),
 243 +       BCM6318_GROUP(gpio26),
 244 +       BCM6318_GROUP(gpio27),
 245 +       BCM6318_GROUP(gpio28),
 246 +       BCM6318_GROUP(gpio29),
 247 +       BCM6318_GROUP(gpio30),
 248 +       BCM6318_GROUP(gpio31),
 249 +       BCM6318_GROUP(gpio32),
 250 +       BCM6318_GROUP(gpio33),
 251 +       BCM6318_GROUP(gpio34),
 252 +       BCM6318_GROUP(gpio35),
 253 +       BCM6318_GROUP(gpio36),
 254 +       BCM6318_GROUP(gpio37),
 255 +       BCM6318_GROUP(gpio38),
 256 +       BCM6318_GROUP(gpio39),
 257 +       BCM6318_GROUP(gpio40),
 258 +       BCM6318_GROUP(gpio41),
 259 +       BCM6318_GROUP(gpio42),
 260 +       BCM6318_GROUP(gpio43),
 261 +       BCM6318_GROUP(gpio44),
 262 +       BCM6318_GROUP(gpio45),
 263 +       BCM6318_GROUP(gpio46),
 264 +       BCM6318_GROUP(gpio47),
 265 +       BCM6318_GROUP(gpio48),
 266 +       BCM6318_GROUP(gpio49),
 267 +};
 268 +
 269 +/* GPIO_MODE */
 270 +static const char * const led_groups[] = {
 271 +       "gpio0",
 272 +       "gpio1",
 273 +       "gpio2",
 274 +       "gpio3",
 275 +       "gpio4",
 276 +       "gpio5",
 277 +       "gpio6",
 278 +       "gpio7",
 279 +       "gpio8",
 280 +       "gpio9",
 281 +       "gpio10",
 282 +       "gpio11",
 283 +       "gpio12",
 284 +       "gpio13",
 285 +       "gpio14",
 286 +       "gpio15",
 287 +       "gpio16",
 288 +       "gpio17",
 289 +       "gpio18",
 290 +       "gpio19",
 291 +       "gpio20",
 292 +       "gpio21",
 293 +       "gpio22",
 294 +       "gpio23",
 295 +};
 296 +
 297 +/* PINMUX_SEL */
 298 +static const char * const ephy0_spd_led_groups[] = {
 299 +       "gpio0",
 300 +};
 301 +
 302 +static const char * const ephy1_spd_led_groups[] = {
 303 +       "gpio1",
 304 +};
 305 +
 306 +static const char * const ephy2_spd_led_groups[] = {
 307 +       "gpio2",
 308 +};
 309 +
 310 +static const char * const ephy3_spd_led_groups[] = {
 311 +       "gpio3",
 312 +};
 313 +
 314 +static const char * const ephy0_act_led_groups[] = {
 315 +       "gpio4",
 316 +};
 317 +
 318 +static const char * const ephy1_act_led_groups[] = {
 319 +       "gpio5",
 320 +};
 321 +
 322 +static const char * const ephy2_act_led_groups[] = {
 323 +       "gpio6",
 324 +};
 325 +
 326 +static const char * const ephy3_act_led_groups[] = {
 327 +       "gpio7",
 328 +};
 329 +
 330 +static const char * const serial_led_data_groups[] = {
 331 +       "gpio6",
 332 +};
 333 +
 334 +static const char * const serial_led_clk_groups[] = {
 335 +       "gpio7",
 336 +};
 337 +
 338 +static const char * const inet_act_led_groups[] = {
 339 +       "gpio8",
 340 +};
 341 +
 342 +static const char * const inet_fail_led_groups[] = {
 343 +       "gpio9",
 344 +};
 345 +
 346 +static const char * const dsl_led_groups[] = {
 347 +       "gpio10",
 348 +};
 349 +
 350 +static const char * const post_fail_led_groups[] = {
 351 +       "gpio11",
 352 +};
 353 +
 354 +static const char * const wlan_wps_led_groups[] = {
 355 +       "gpio12",
 356 +};
 357 +
 358 +static const char * const usb_pwron_groups[] = {
 359 +       "gpio13",
 360 +};
 361 +
 362 +static const char * const usb_device_led_groups[] = {
 363 +       "gpio13",
 364 +};
 365 +
 366 +static const char * const usb_active_groups[] = {
 367 +       "gpio40",
 368 +};
 369 +
 370 +#define BCM6318_MODE_FUN(n)                            \
 371 +       {                                               \
 372 +               .name = #n,                             \
 373 +               .groups = n##_groups,                   \
 374 +               .num_groups = ARRAY_SIZE(n##_groups),   \
 375 +               .mode_val = 1,                          \
 376 +       }
 377 +
 378 +#define BCM6318_MUX_FUN(n, mux)                                \
 379 +       {                                               \
 380 +               .name = #n,                             \
 381 +               .groups = n##_groups,                   \
 382 +               .num_groups = ARRAY_SIZE(n##_groups),   \
 383 +               .mux_val = mux,                         \
 384 +       }
 385 +
 386 +static const struct bcm6318_function bcm6318_funcs[] = {
 387 +       BCM6318_MODE_FUN(led),
 388 +       BCM6318_MUX_FUN(ephy0_spd_led, 1),
 389 +       BCM6318_MUX_FUN(ephy1_spd_led, 1),
 390 +       BCM6318_MUX_FUN(ephy2_spd_led, 1),
 391 +       BCM6318_MUX_FUN(ephy3_spd_led, 1),
 392 +       BCM6318_MUX_FUN(ephy0_act_led, 1),
 393 +       BCM6318_MUX_FUN(ephy1_act_led, 1),
 394 +       BCM6318_MUX_FUN(ephy2_act_led, 1),
 395 +       BCM6318_MUX_FUN(ephy3_act_led, 1),
 396 +       BCM6318_MUX_FUN(serial_led_data, 3),
 397 +       BCM6318_MUX_FUN(serial_led_clk, 3),
 398 +       BCM6318_MUX_FUN(inet_act_led, 1),
 399 +       BCM6318_MUX_FUN(inet_fail_led, 1),
 400 +       BCM6318_MUX_FUN(dsl_led, 1),
 401 +       BCM6318_MUX_FUN(post_fail_led, 1),
 402 +       BCM6318_MUX_FUN(wlan_wps_led, 1),
 403 +       BCM6318_MUX_FUN(usb_pwron, 1),
 404 +       BCM6318_MUX_FUN(usb_device_led, 2),
 405 +       BCM6318_MUX_FUN(usb_active, 2),
 406 +};
 407 +
 408 +static int bcm6318_pinctrl_get_group_count(struct pinctrl_dev *pctldev)
 409 +{
 410 +       return ARRAY_SIZE(bcm6318_groups);
 411 +}
 412 +
 413 +static const char *bcm6318_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
 414 +                                                 unsigned group)
 415 +{
 416 +       return bcm6318_groups[group].name;
 417 +}
 418 +
 419 +static int bcm6318_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
 420 +                                         unsigned group, const unsigned **pins,
 421 +                                         unsigned *num_pins)
 422 +{
 423 +       *pins = bcm6318_groups[group].pins;
 424 +       *num_pins = bcm6318_groups[group].num_pins;
 425 +
 426 +       return 0;
 427 +}
 428 +
 429 +static int bcm6318_pinctrl_get_func_count(struct pinctrl_dev *pctldev)
 430 +{
 431 +       return ARRAY_SIZE(bcm6318_funcs);
 432 +}
 433 +
 434 +static const char *bcm6318_pinctrl_get_func_name(struct pinctrl_dev *pctldev,
 435 +                                                unsigned selector)
 436 +{
 437 +       return bcm6318_funcs[selector].name;
 438 +}
 439 +
 440 +static int bcm6318_pinctrl_get_groups(struct pinctrl_dev *pctldev,
 441 +                                     unsigned selector,
 442 +                                     const char * const **groups,
 443 +                                     unsigned * const num_groups)
 444 +{
 445 +       *groups = bcm6318_funcs[selector].groups;
 446 +       *num_groups = bcm6318_funcs[selector].num_groups;
 447 +
 448 +       return 0;
 449 +}
 450 +
 451 +static void bcm6318_rmw_mux(struct bcm6318_pinctrl *pctl, unsigned pin,
 452 +                           u32 mode, u32 mux)
 453 +{
 454 +       unsigned long flags;
 455 +       u32 reg;
 456 +
 457 +       spin_lock_irqsave(&pctl->lock, flags);
 458 +       if (pin < 32) {
 459 +               reg = __raw_readl(pctl->mode);
 460 +               reg &= ~BIT(pin);
 461 +               if (mode)
 462 +                       reg |= BIT(pin);
 463 +               __raw_writel(reg, pctl->mode);
 464 +       }
 465 +
 466 +       if (pin < 48) {
 467 +               reg = __raw_readl(pctl->mux[pin / 16]);
 468 +               reg &= ~(3UL << ((pin % 16) * 2));
 469 +               reg |= mux << ((pin % 16) * 2);
 470 +               __raw_writel(reg, pctl->mux[pin / 16]);
 471 +       }
 472 +       spin_unlock_irqrestore(&pctl->lock, flags);
 473 +}
 474 +
 475 +static void bcm6318_set_pad(struct bcm6318_pinctrl *pctl, unsigned pin, u8 val)
 476 +{
 477 +       unsigned long flags;
 478 +       u32 reg;
 479 +
 480 +       spin_lock_irqsave(&pctl->lock, flags);
 481 +       reg = __raw_readl(pctl->pad[pin / 8]);
 482 +       reg &= ~(0xfUL << ((pin % 8) * 4));
 483 +       reg |= val << ((pin % 8) * 4);
 484 +       __raw_writel(reg, pctl->pad[pin / 8]);
 485 +       spin_unlock_irqrestore(&pctl->lock, flags);
 486 +}
 487 +
 488 +static int bcm6318_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 489 +                                  unsigned selector, unsigned group)
 490 +{
 491 +       struct bcm6318_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
 492 +       const struct bcm6318_pingroup *grp = &bcm6318_groups[group];
 493 +       const struct bcm6318_function *f = &bcm6318_funcs[selector];
 494 +
 495 +       bcm6318_rmw_mux(pctl, grp->pins[0], f->mode_val, f->mux_val);
 496 +
 497 +       return 0;
 498 +}
 499 +
 500 +static int bcm6318_gpio_request_enable(struct pinctrl_dev *pctldev,
 501 +                                      struct pinctrl_gpio_range *range,
 502 +                                      unsigned offset)
 503 +{
 504 +       struct bcm6318_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
 505 +
 506 +       /* disable all functions using this pin */
 507 +       if (offset < 13) {
 508 +               /* GPIOs 0-12 use mux 0 as GPIO function */
 509 +               bcm6318_rmw_mux(pctl, offset, 0, 0);
 510 +       } else if (offset < 42) {
 511 +               /* GPIOs 13-41 use mux 3 as GPIO function */
 512 +               bcm6318_rmw_mux(pctl, offset, 0, 3);
 513 +
 514 +               /* FIXME: revert to old value for non gpio? */
 515 +               bcm6318_set_pad(pctl, offset, 0);
 516 +       } else {
 517 +               /* no idea, really */
 518 +       }
 519 +
 520 +       return 0;
 521 +}
 522 +
 523 +static struct pinctrl_ops bcm6318_pctl_ops = {
 524 +       .get_groups_count       = bcm6318_pinctrl_get_group_count,
 525 +       .get_group_name         = bcm6318_pinctrl_get_group_name,
 526 +       .get_group_pins         = bcm6318_pinctrl_get_group_pins,
 527 +#ifdef CONFIG_OF
 528 +       .dt_node_to_map         = pinconf_generic_dt_node_to_map_pin,
 529 +       .dt_free_map            = pinctrl_utils_free_map,
 530 +#endif
 531 +};
 532 +
 533 +static struct pinmux_ops bcm6318_pmx_ops = {
 534 +       .get_functions_count    = bcm6318_pinctrl_get_func_count,
 535 +       .get_function_name      = bcm6318_pinctrl_get_func_name,
 536 +       .get_function_groups    = bcm6318_pinctrl_get_groups,
 537 +       .set_mux                = bcm6318_pinctrl_set_mux,
 538 +       .gpio_request_enable    = bcm6318_gpio_request_enable,
 539 +       .strict                 = true,
 540 +};
 541 +
 542 +static int bcm6318_pinctrl_probe(struct platform_device *pdev)
 543 +{
 544 +       struct bcm6318_pinctrl *pctl;
 545 +       struct resource *res;
 546 +       void __iomem *mode, *mux, *pad;
 547 +       unsigned i;
 548 +
 549 +       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mode");
 550 +       mode = devm_ioremap_resource(&pdev->dev, res);
 551 +       if (IS_ERR(mode))
 552 +               return PTR_ERR(mode);
 553 +
 554 +       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mux");
 555 +       mux = devm_ioremap_resource(&pdev->dev, res);
 556 +       if (IS_ERR(mux))
 557 +               return PTR_ERR(mux);
 558 +
 559 +       res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pad");
 560 +       pad = devm_ioremap_resource(&pdev->dev, res);
 561 +       if (IS_ERR(pad))
 562 +               return PTR_ERR(pad);
 563 +
 564 +       pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL);
 565 +       if (!pctl)
 566 +               return -ENOMEM;
 567 +
 568 +       spin_lock_init(&pctl->lock);
 569 +
 570 +       pctl->mode = mode;
 571 +
 572 +       for (i = 0; i < 3; i++)
 573 +               pctl->mux[i] = mux + (i * 4);
 574 +
 575 +       for (i = 0; i < 6; i++)
 576 +               pctl->pad[i] = pad + (i * 4);
 577 +
 578 +       pctl->desc.name = dev_name(&pdev->dev);
 579 +       pctl->desc.owner = THIS_MODULE;
 580 +       pctl->desc.pctlops = &bcm6318_pctl_ops;
 581 +       pctl->desc.pmxops = &bcm6318_pmx_ops;
 582 +
 583 +       pctl->desc.npins = ARRAY_SIZE(bcm6318_pins);
 584 +       pctl->desc.pins = bcm6318_pins;
 585 +
 586 +       platform_set_drvdata(pdev, pctl);
 587 +
 588 +       pctl->pctldev = bcm63xx_pinctrl_register(pdev, &pctl->desc, pctl,
 589 +                                                pctl->gpio, BCM6318_NGPIO);
 590 +       if (IS_ERR(pctl->pctldev))
 591 +               return PTR_ERR(pctl->pctldev);
 592 +
 593 +       return 0;
 594 +}
 595 +
 596 +static const struct of_device_id bcm6318_pinctrl_match[] = {
 597 +       { .compatible = "brcm,bcm6318-pinctrl", },
 598 +       { },
 599 +};
 600 +
 601 +static struct platform_driver bcm6318_pinctrl_driver = {
 602 +       .probe = bcm6318_pinctrl_probe,
 603 +       .driver = {
 604 +               .name = "bcm6318-pinctrl",
 605 +               .of_match_table = bcm6318_pinctrl_match,
 606 +       },
 607 +};
 608 +
 609 +builtin_platform_driver(bcm6318_pinctrl_driver);