drivers/pinctrl/pinctrl-falcon.c

   1 /*
   2  *  linux/drivers/pinctrl/pinmux-falcon.c
   3  *  based on linux/drivers/pinctrl/pinmux-pxa910.c
   4  *
   5  *  This program is free software; you can redistribute it and/or modify it
   6  *  under the terms of the GNU General Public License version 2 as published
   7  *  by the Free Software Foundation.
   8  *
   9  *  Copyright (C) 2012 Thomas Langer <thomas.langer@lantiq.com>
  10  *  Copyright (C) 2012 John Crispin <blogic@openwrt.org>
  11  */
  12
  13 #include <linux/gpio.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/slab.h>
  16 #include <linux/export.h>
  17 #include <linux/err.h>
  18 #include <linux/module.h>
  19 #include <linux/of.h>
  20 #include <linux/of_platform.h>
  21 #include <linux/of_address.h>
  22 #include <linux/of_gpio.h>
  23 #include <linux/platform_device.h>
  24
  25 #include "pinctrl-lantiq.h"
  26
  27 #include <lantiq_soc.h>
  28
  29 /* Multiplexer Control Register */
  30 #define LTQ_PADC_MUX(x)         (x * 0x4)
  31 /* Pull Up Enable Register */
  32 #define LTQ_PADC_PUEN           0x80
  33 /* Pull Down Enable Register */
  34 #define LTQ_PADC_PDEN           0x84
  35 /* Slew Rate Control Register */
  36 #define LTQ_PADC_SRC            0x88
  37 /* Drive Current Control Register */
  38 #define LTQ_PADC_DCC            0x8C
  39 /* Pad Control Availability Register */
  40 #define LTQ_PADC_AVAIL          0xF0
  41
  42 #define pad_r32(p, reg)         ltq_r32(p + reg)
  43 #define pad_w32(p, val, reg)    ltq_w32(val, p + reg)
  44 #define pad_w32_mask(c, clear, set, reg) \
  45                 pad_w32(c, (pad_r32(c, reg) & ~(clear)) | (set), reg)
  46
  47 #define pad_getbit(m, r, p)     (!!(ltq_r32(m + r) & (1 << p)))
  48
  49 #define PORTS                   5
  50 #define PINS                    32
  51 #define PORT(x)                 (x / PINS)
  52 #define PORT_PIN(x)             (x % PINS)
  53
  54 #define MFP_FALCON(a, f0, f1, f2, f3)           \
  55 {                                               \
  56         .name = #a,                             \
  57         .pin = a,                               \
  58         .func = {                               \
  59                 FALCON_MUX_##f0,                \
  60                 FALCON_MUX_##f1,                \
  61                 FALCON_MUX_##f2,                \
  62                 FALCON_MUX_##f3,                \
  63         },                                      \
  64 }
  65
  66 #define GRP_MUX(a, m, p)        \
  67 {                               \
  68         .name = a,              \
  69         .mux = FALCON_MUX_##m,  \
  70         .pins = p,              \
  71         .npins = ARRAY_SIZE(p), \
  72 }
  73
  74 enum falcon_mux {
  75         FALCON_MUX_GPIO = 0,
  76         FALCON_MUX_RST,
  77         FALCON_MUX_NTR,
  78         FALCON_MUX_PPS,
  79         FALCON_MUX_MDIO,
  80         FALCON_MUX_LED,
  81         FALCON_MUX_SPI,
  82         FALCON_MUX_ASC,
  83         FALCON_MUX_I2C,
  84         FALCON_MUX_HOSTIF,
  85         FALCON_MUX_SLIC,
  86         FALCON_MUX_JTAG,
  87         FALCON_MUX_PCM,
  88         FALCON_MUX_MII,
  89         FALCON_MUX_PHY,
  90         FALCON_MUX_NONE = 0xffff,
  91 };
  92
  93 static struct pinctrl_pin_desc falcon_pads[PORTS * PINS];
  94 static int pad_count[PORTS];
  95
  96 static void lantiq_load_pin_desc(struct pinctrl_pin_desc *d, int bank, int len)
  97 {
  98         int base = bank * PINS;
  99         int i;
 100
 101         for (i = 0; i < len; i++) {
 102                 /* strlen("ioXYZ") + 1 = 6 */
 103                 char *name = kzalloc(6, GFP_KERNEL);
 104                 snprintf(name, 6, "io%d", base + i);
 105                 d[i].number = base + i;
 106                 d[i].name = name;
 107         }
 108         pad_count[bank] = len;
 109 }
 110
 111 static struct ltq_mfp_pin falcon_mfp[] = {
 112         /*      pin             f0      f1      f2      f3 */
 113         MFP_FALCON(GPIO0,       RST,    GPIO,   NONE,   NONE),
 114         MFP_FALCON(GPIO1,       GPIO,   GPIO,   NONE,   NONE),
 115         MFP_FALCON(GPIO2,       GPIO,   GPIO,   NONE,   NONE),
 116         MFP_FALCON(GPIO3,       GPIO,   GPIO,   NONE,   NONE),
 117         MFP_FALCON(GPIO4,       NTR,    GPIO,   NONE,   NONE),
 118         MFP_FALCON(GPIO5,       NTR,    GPIO,   PPS,    NONE),
 119         MFP_FALCON(GPIO6,       RST,    GPIO,   NONE,   NONE),
 120         MFP_FALCON(GPIO7,       MDIO,   GPIO,   NONE,   NONE),
 121         MFP_FALCON(GPIO8,       MDIO,   GPIO,   NONE,   NONE),
 122         MFP_FALCON(GPIO9,       LED,    GPIO,   NONE,   NONE),
 123         MFP_FALCON(GPIO10,      LED,    GPIO,   NONE,   NONE),
 124         MFP_FALCON(GPIO11,      LED,    GPIO,   NONE,   NONE),
 125         MFP_FALCON(GPIO12,      LED,    GPIO,   NONE,   NONE),
 126         MFP_FALCON(GPIO13,      LED,    GPIO,   NONE,   NONE),
 127         MFP_FALCON(GPIO14,      LED,    GPIO,   NONE,   NONE),
 128         MFP_FALCON(GPIO32,      ASC,    GPIO,   NONE,   NONE),
 129         MFP_FALCON(GPIO33,      ASC,    GPIO,   NONE,   NONE),
 130         MFP_FALCON(GPIO34,      SPI,    GPIO,   NONE,   NONE),
 131         MFP_FALCON(GPIO35,      SPI,    GPIO,   NONE,   NONE),
 132         MFP_FALCON(GPIO36,      SPI,    GPIO,   NONE,   NONE),
 133         MFP_FALCON(GPIO37,      SPI,    GPIO,   NONE,   NONE),
 134         MFP_FALCON(GPIO38,      SPI,    GPIO,   NONE,   NONE),
 135         MFP_FALCON(GPIO39,      I2C,    GPIO,   NONE,   NONE),
 136         MFP_FALCON(GPIO40,      I2C,    GPIO,   NONE,   NONE),
 137         MFP_FALCON(GPIO41,      HOSTIF, GPIO,   HOSTIF, JTAG),
 138         MFP_FALCON(GPIO42,      HOSTIF, GPIO,   HOSTIF, NONE),
 139         MFP_FALCON(GPIO43,      SLIC,   GPIO,   NONE,   NONE),
 140         MFP_FALCON(GPIO44,      SLIC,   GPIO,   PCM,    ASC),
 141         MFP_FALCON(GPIO45,      SLIC,   GPIO,   PCM,    ASC),
 142         MFP_FALCON(GPIO64,      MII,    GPIO,   NONE,   NONE),
 143         MFP_FALCON(GPIO65,      MII,    GPIO,   NONE,   NONE),
 144         MFP_FALCON(GPIO66,      MII,    GPIO,   NONE,   NONE),
 145         MFP_FALCON(GPIO67,      MII,    GPIO,   NONE,   NONE),
 146         MFP_FALCON(GPIO68,      MII,    GPIO,   NONE,   NONE),
 147         MFP_FALCON(GPIO69,      MII,    GPIO,   NONE,   NONE),
 148         MFP_FALCON(GPIO70,      MII,    GPIO,   NONE,   NONE),
 149         MFP_FALCON(GPIO71,      MII,    GPIO,   NONE,   NONE),
 150         MFP_FALCON(GPIO72,      MII,    GPIO,   NONE,   NONE),
 151         MFP_FALCON(GPIO73,      MII,    GPIO,   NONE,   NONE),
 152         MFP_FALCON(GPIO74,      MII,    GPIO,   NONE,   NONE),
 153         MFP_FALCON(GPIO75,      MII,    GPIO,   NONE,   NONE),
 154         MFP_FALCON(GPIO76,      MII,    GPIO,   NONE,   NONE),
 155         MFP_FALCON(GPIO77,      MII,    GPIO,   NONE,   NONE),
 156         MFP_FALCON(GPIO78,      MII,    GPIO,   NONE,   NONE),
 157         MFP_FALCON(GPIO79,      MII,    GPIO,   NONE,   NONE),
 158         MFP_FALCON(GPIO80,      MII,    GPIO,   NONE,   NONE),
 159         MFP_FALCON(GPIO81,      MII,    GPIO,   NONE,   NONE),
 160         MFP_FALCON(GPIO82,      MII,    GPIO,   NONE,   NONE),
 161         MFP_FALCON(GPIO83,      MII,    GPIO,   NONE,   NONE),
 162         MFP_FALCON(GPIO84,      MII,    GPIO,   NONE,   NONE),
 163         MFP_FALCON(GPIO85,      MII,    GPIO,   NONE,   NONE),
 164         MFP_FALCON(GPIO86,      MII,    GPIO,   NONE,   NONE),
 165         MFP_FALCON(GPIO87,      MII,    GPIO,   NONE,   NONE),
 166         MFP_FALCON(GPIO88,      PHY,    GPIO,   NONE,   NONE),
 167 };
 168
 169 static const unsigned pins_por[] = {GPIO0};
 170 static const unsigned pins_ntr[] = {GPIO4};
 171 static const unsigned pins_ntr8k[] = {GPIO5};
 172 static const unsigned pins_pps[] = {GPIO5};
 173 static const unsigned pins_hrst[] = {GPIO6};
 174 static const unsigned pins_mdio[] = {GPIO7, GPIO8};
 175 static const unsigned pins_bled[] = {GPIO9, GPIO10, GPIO11,
 176                                         GPIO12, GPIO13, GPIO14};
 177 static const unsigned pins_asc0[] = {GPIO32, GPIO33};
 178 static const unsigned pins_spi[] = {GPIO34, GPIO35, GPIO36};
 179 static const unsigned pins_spi_cs0[] = {GPIO37};
 180 static const unsigned pins_spi_cs1[] = {GPIO38};
 181 static const unsigned pins_i2c[] = {GPIO39, GPIO40};
 182 static const unsigned pins_jtag[] = {GPIO41};
 183 static const unsigned pins_slic[] = {GPIO43, GPIO44, GPIO45};
 184 static const unsigned pins_pcm[] = {GPIO44, GPIO45};
 185 static const unsigned pins_asc1[] = {GPIO44, GPIO45};
 186
 187 static struct ltq_pin_group falcon_grps[] = {
 188         GRP_MUX("por", RST, pins_por),
 189         GRP_MUX("ntr", NTR, pins_ntr),
 190         GRP_MUX("ntr8k", NTR, pins_ntr8k),
 191         GRP_MUX("pps", PPS, pins_pps),
 192         GRP_MUX("hrst", RST, pins_hrst),
 193         GRP_MUX("mdio", MDIO, pins_mdio),
 194         GRP_MUX("bootled", LED, pins_bled),
 195         GRP_MUX("asc0", ASC, pins_asc0),
 196         GRP_MUX("spi", SPI, pins_spi),
 197         GRP_MUX("spi cs0", SPI, pins_spi_cs0),
 198         GRP_MUX("spi cs1", SPI, pins_spi_cs1),
 199         GRP_MUX("i2c", I2C, pins_i2c),
 200         GRP_MUX("jtag", JTAG, pins_jtag),
 201         GRP_MUX("slic", SLIC, pins_slic),
 202         GRP_MUX("pcm", PCM, pins_pcm),
 203         GRP_MUX("asc1", ASC, pins_asc1),
 204 };
 205
 206 static const char * const ltq_rst_grps[] = {"por", "hrst"};
 207 static const char * const ltq_ntr_grps[] = {"ntr", "ntr8k", "pps"};
 208 static const char * const ltq_mdio_grps[] = {"mdio"};
 209 static const char * const ltq_bled_grps[] = {"bootled"};
 210 static const char * const ltq_asc_grps[] = {"asc0", "asc1"};
 211 static const char * const ltq_spi_grps[] = {"spi", "spi cs0", "spi cs1"};
 212 static const char * const ltq_i2c_grps[] = {"i2c"};
 213 static const char * const ltq_jtag_grps[] = {"jtag"};
 214 static const char * const ltq_slic_grps[] = {"slic"};
 215 static const char * const ltq_pcm_grps[] = {"pcm"};
 216
 217 static struct ltq_pmx_func falcon_funcs[] = {
 218         {"rst",         ARRAY_AND_SIZE(ltq_rst_grps)},
 219         {"ntr",         ARRAY_AND_SIZE(ltq_ntr_grps)},
 220         {"mdio",        ARRAY_AND_SIZE(ltq_mdio_grps)},
 221         {"led",         ARRAY_AND_SIZE(ltq_bled_grps)},
 222         {"asc",         ARRAY_AND_SIZE(ltq_asc_grps)},
 223         {"spi",         ARRAY_AND_SIZE(ltq_spi_grps)},
 224         {"i2c",         ARRAY_AND_SIZE(ltq_i2c_grps)},
 225         {"jtag",        ARRAY_AND_SIZE(ltq_jtag_grps)},
 226         {"slic",        ARRAY_AND_SIZE(ltq_slic_grps)},
 227         {"pcm",         ARRAY_AND_SIZE(ltq_pcm_grps)},
 228 };
 229
 230
 231
 232
 233 /* ---------  pinconf related code --------- */
 234 static int falcon_pinconf_group_get(struct pinctrl_dev *pctrldev,
 235                                 unsigned group, unsigned long *config)
 236 {
 237         return -ENOTSUPP;
 238 }
 239
 240 static int falcon_pinconf_group_set(struct pinctrl_dev *pctrldev,
 241                                 unsigned group, unsigned long *configs,
 242                                 unsigned num_configs)
 243 {
 244         return -ENOTSUPP;
 245 }
 246
 247 static int falcon_pinconf_get(struct pinctrl_dev *pctrldev,
 248                                 unsigned pin, unsigned long *config)
 249 {
 250         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 251         enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(*config);
 252         void __iomem *mem = info->membase[PORT(pin)];
 253
 254         switch (param) {
 255         case LTQ_PINCONF_PARAM_DRIVE_CURRENT:
 256                 *config = LTQ_PINCONF_PACK(param,
 257                         !!pad_getbit(mem, LTQ_PADC_DCC, PORT_PIN(pin)));
 258                 break;
 259
 260         case LTQ_PINCONF_PARAM_SLEW_RATE:
 261                 *config = LTQ_PINCONF_PACK(param,
 262                         !!pad_getbit(mem, LTQ_PADC_SRC, PORT_PIN(pin)));
 263                 break;
 264
 265         case LTQ_PINCONF_PARAM_PULL:
 266                 if (pad_getbit(mem, LTQ_PADC_PDEN, PORT_PIN(pin)))
 267                         *config = LTQ_PINCONF_PACK(param, 1);
 268                 else if (pad_getbit(mem, LTQ_PADC_PUEN, PORT_PIN(pin)))
 269                         *config = LTQ_PINCONF_PACK(param, 2);
 270                 else
 271                         *config = LTQ_PINCONF_PACK(param, 0);
 272
 273                 break;
 274
 275         default:
 276                 return -ENOTSUPP;
 277         }
 278
 279         return 0;
 280 }
 281
 282 static int falcon_pinconf_set(struct pinctrl_dev *pctrldev,
 283                         unsigned pin, unsigned long *configs,
 284                         unsigned num_configs)
 285 {
 286         enum ltq_pinconf_param param;
 287         int arg;
 288         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 289         void __iomem *mem = info->membase[PORT(pin)];
 290         u32 reg;
 291         int i;
 292
 293         for (i = 0; i < num_configs; i++) {
 294                 param = LTQ_PINCONF_UNPACK_PARAM(configs[i]);
 295                 arg = LTQ_PINCONF_UNPACK_ARG(configs[i]);
 296
 297                 switch (param) {
 298                 case LTQ_PINCONF_PARAM_DRIVE_CURRENT:
 299                         reg = LTQ_PADC_DCC;
 300                         break;
 301
 302                 case LTQ_PINCONF_PARAM_SLEW_RATE:
 303                         reg = LTQ_PADC_SRC;
 304                         break;
 305
 306                 case LTQ_PINCONF_PARAM_PULL:
 307                         if (arg == 1)
 308                                 reg = LTQ_PADC_PDEN;
 309                         else
 310                                 reg = LTQ_PADC_PUEN;
 311                         break;
 312
 313                 default:
 314                         pr_err("%s: Invalid config param %04x\n",
 315                         pinctrl_dev_get_name(pctrldev), param);
 316                         return -ENOTSUPP;
 317                 }
 318
 319                 pad_w32(mem, BIT(PORT_PIN(pin)), reg);
 320                 if (!(pad_r32(mem, reg) & BIT(PORT_PIN(pin))))
 321                         return -ENOTSUPP;
 322         } /* for each config */
 323
 324         return 0;
 325 }
 326
 327 static void falcon_pinconf_dbg_show(struct pinctrl_dev *pctrldev,
 328                         struct seq_file *s, unsigned offset)
 329 {
 330         unsigned long config;
 331         struct pin_desc *desc;
 332
 333         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 334         int port = PORT(offset);
 335
 336         seq_printf(s, " (port %d) mux %d -- ", port,
 337                 pad_r32(info->membase[port], LTQ_PADC_MUX(PORT_PIN(offset))));
 338
 339         config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_PULL, 0);
 340         if (!falcon_pinconf_get(pctrldev, offset, &config))
 341                 seq_printf(s, "pull %d ",
 342                         (int)LTQ_PINCONF_UNPACK_ARG(config));
 343
 344         config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_DRIVE_CURRENT, 0);
 345         if (!falcon_pinconf_get(pctrldev, offset, &config))
 346                 seq_printf(s, "drive-current %d ",
 347                         (int)LTQ_PINCONF_UNPACK_ARG(config));
 348
 349         config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_SLEW_RATE, 0);
 350         if (!falcon_pinconf_get(pctrldev, offset, &config))
 351                 seq_printf(s, "slew-rate %d ",
 352                         (int)LTQ_PINCONF_UNPACK_ARG(config));
 353
 354         desc = pin_desc_get(pctrldev, offset);
 355         if (desc) {
 356                 if (desc->gpio_owner)
 357                         seq_printf(s, " owner: %s", desc->gpio_owner);
 358         } else {
 359                 seq_printf(s, " not registered");
 360         }
 361 }
 362
 363 static void falcon_pinconf_group_dbg_show(struct pinctrl_dev *pctrldev,
 364                         struct seq_file *s, unsigned selector)
 365 {
 366 }
 367
 368 static const struct pinconf_ops falcon_pinconf_ops = {
 369         .pin_config_get                 = falcon_pinconf_get,
 370         .pin_config_set                 = falcon_pinconf_set,
 371         .pin_config_group_get           = falcon_pinconf_group_get,
 372         .pin_config_group_set           = falcon_pinconf_group_set,
 373         .pin_config_dbg_show            = falcon_pinconf_dbg_show,
 374         .pin_config_group_dbg_show      = falcon_pinconf_group_dbg_show,
 375 };
 376
 377 static struct pinctrl_desc falcon_pctrl_desc = {
 378         .owner          = THIS_MODULE,
 379         .pins           = falcon_pads,
 380         .confops        = &falcon_pinconf_ops,
 381 };
 382
 383 static inline int falcon_mux_apply(struct pinctrl_dev *pctrldev,
 384                         int mfp, int mux)
 385 {
 386         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 387         int port = PORT(info->mfp[mfp].pin);
 388
 389         if ((port >= PORTS) || (!info->membase[port]))
 390                 return -ENODEV;
 391
 392         pad_w32(info->membase[port], mux,
 393                 LTQ_PADC_MUX(PORT_PIN(info->mfp[mfp].pin)));
 394         return 0;
 395 }
 396
 397 static const struct ltq_cfg_param falcon_cfg_params[] = {
 398         {"lantiq,pull",                 LTQ_PINCONF_PARAM_PULL},
 399         {"lantiq,drive-current",        LTQ_PINCONF_PARAM_DRIVE_CURRENT},
 400         {"lantiq,slew-rate",            LTQ_PINCONF_PARAM_SLEW_RATE},
 401 };
 402
 403 static struct ltq_pinmux_info falcon_info = {
 404         .desc           = &falcon_pctrl_desc,
 405         .apply_mux      = falcon_mux_apply,
 406         .params         = falcon_cfg_params,
 407         .num_params     = ARRAY_SIZE(falcon_cfg_params),
 408 };
 409
 410
 411
 412
 413 /* --------- register the pinctrl layer --------- */
 414
 415 int pinctrl_falcon_get_range_size(int id)
 416 {
 417         u32 avail;
 418
 419         if ((id >= PORTS) || (!falcon_info.membase[id]))
 420                 return -EINVAL;
 421
 422         avail = pad_r32(falcon_info.membase[id], LTQ_PADC_AVAIL);
 423
 424         return fls(avail);
 425 }
 426
 427 void pinctrl_falcon_add_gpio_range(struct pinctrl_gpio_range *range)
 428 {
 429         pinctrl_add_gpio_range(falcon_info.pctrl, range);
 430 }
 431
 432 static int pinctrl_falcon_probe(struct platform_device *pdev)
 433 {
 434         struct device_node *np;
 435         int pad_count = 0;
 436         int ret = 0;
 437
 438         /* load and remap the pad resources of the different banks */
 439         for_each_compatible_node(np, NULL, "lantiq,pad-falcon") {
 440                 struct platform_device *ppdev = of_find_device_by_node(np);
 441                 const __be32 *bank = of_get_property(np, "lantiq,bank", NULL);
 442                 struct resource res;
 443                 u32 avail;
 444                 int pins;
 445
 446                 if (!of_device_is_available(np))
 447                         continue;
 448
 449                 if (!ppdev) {
 450                         dev_err(&pdev->dev, "failed to find pad pdev\n");
 451                         continue;
 452                 }
 453                 if (!bank || *bank >= PORTS)
 454                         continue;
 455                 if (of_address_to_resource(np, 0, &res))
 456                         continue;
 457                 falcon_info.clk[*bank] = clk_get(&ppdev->dev, NULL);
 458                 if (IS_ERR(falcon_info.clk[*bank])) {
 459                         dev_err(&ppdev->dev, "failed to get clock\n");
 460                         return PTR_ERR(falcon_info.clk[*bank]);
 461                 }
 462                 falcon_info.membase[*bank] = devm_ioremap_resource(&pdev->dev,
 463                                                                    &res);
 464                 if (IS_ERR(falcon_info.membase[*bank]))
 465                         return PTR_ERR(falcon_info.membase[*bank]);
 466
 467                 avail = pad_r32(falcon_info.membase[*bank],
 468                                         LTQ_PADC_AVAIL);
 469                 pins = fls(avail);
 470                 lantiq_load_pin_desc(&falcon_pads[pad_count], *bank, pins);
 471                 pad_count += pins;
 472                 clk_enable(falcon_info.clk[*bank]);
 473                 dev_dbg(&pdev->dev, "found %s with %d pads\n",
 474                                 res.name, pins);
 475         }
 476         dev_dbg(&pdev->dev, "found a total of %d pads\n", pad_count);
 477         falcon_pctrl_desc.name  = dev_name(&pdev->dev);
 478         falcon_pctrl_desc.npins = pad_count;
 479
 480         falcon_info.mfp         = falcon_mfp;
 481         falcon_info.num_mfp     = ARRAY_SIZE(falcon_mfp);
 482         falcon_info.grps        = falcon_grps;
 483         falcon_info.num_grps    = ARRAY_SIZE(falcon_grps);
 484         falcon_info.funcs       = falcon_funcs;
 485         falcon_info.num_funcs   = ARRAY_SIZE(falcon_funcs);
 486
 487         ret = ltq_pinctrl_register(pdev, &falcon_info);
 488         if (!ret)
 489                 dev_info(&pdev->dev, "Init done\n");
 490         return ret;
 491 }
 492
 493 static const struct of_device_id falcon_match[] = {
 494         { .compatible = "lantiq,pinctrl-falcon" },
 495         {},
 496 };
 497 MODULE_DEVICE_TABLE(of, falcon_match);
 498
 499 static struct platform_driver pinctrl_falcon_driver = {
 500         .probe = pinctrl_falcon_probe,
 501         .driver = {
 502                 .name = "pinctrl-falcon",
 503                 .of_match_table = falcon_match,
 504         },
 505 };
 506
 507 int __init pinctrl_falcon_init(void)
 508 {
 509         return platform_driver_register(&pinctrl_falcon_driver);
 510 }
 511
 512 core_initcall_sync(pinctrl_falcon_init);