drivers/pinctrl/pinctrl-falcon.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  linux/drivers/pinctrl/pinmux-falcon.c
   4  *  based on linux/drivers/pinctrl/pinmux-pxa910.c
   5  *
   6  *  Copyright (C) 2012 Thomas Langer <thomas.langer@lantiq.com>
   7  *  Copyright (C) 2012 John Crispin <john@phrozen.org>
   8  */
   9
  10 #include <linux/gpio/driver.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/slab.h>
  13 #include <linux/export.h>
  14 #include <linux/err.h>
  15 #include <linux/module.h>
  16 #include <linux/of.h>
  17 #include <linux/of_platform.h>
  18 #include <linux/of_address.h>
  19 #include <linux/of_gpio.h>
  20 #include <linux/platform_device.h>
  21
  22 #include "pinctrl-lantiq.h"
  23
  24 #include <lantiq_soc.h>
  25
  26 /* Multiplexer Control Register */
  27 #define LTQ_PADC_MUX(x)         (x * 0x4)
  28 /* Pull Up Enable Register */
  29 #define LTQ_PADC_PUEN           0x80
  30 /* Pull Down Enable Register */
  31 #define LTQ_PADC_PDEN           0x84
  32 /* Slew Rate Control Register */
  33 #define LTQ_PADC_SRC            0x88
  34 /* Drive Current Control Register */
  35 #define LTQ_PADC_DCC            0x8C
  36 /* Pad Control Availability Register */
  37 #define LTQ_PADC_AVAIL          0xF0
  38
  39 #define pad_r32(p, reg)         ltq_r32(p + reg)
  40 #define pad_w32(p, val, reg)    ltq_w32(val, p + reg)
  41 #define pad_w32_mask(c, clear, set, reg) \
  42                 pad_w32(c, (pad_r32(c, reg) & ~(clear)) | (set), reg)
  43
  44 #define pad_getbit(m, r, p)     (!!(ltq_r32(m + r) & (1 << p)))
  45
  46 #define PORTS                   5
  47 #define PINS                    32
  48 #define PORT(x)                 (x / PINS)
  49 #define PORT_PIN(x)             (x % PINS)
  50
  51 #define MFP_FALCON(a, f0, f1, f2, f3)           \
  52 {                                               \
  53         .name = #a,                             \
  54         .pin = a,                               \
  55         .func = {                               \
  56                 FALCON_MUX_##f0,                \
  57                 FALCON_MUX_##f1,                \
  58                 FALCON_MUX_##f2,                \
  59                 FALCON_MUX_##f3,                \
  60         },                                      \
  61 }
  62
  63 #define GRP_MUX(a, m, p)        \
  64 {                               \
  65         .name = a,              \
  66         .mux = FALCON_MUX_##m,  \
  67         .pins = p,              \
  68         .npins = ARRAY_SIZE(p), \
  69 }
  70
  71 enum falcon_mux {
  72         FALCON_MUX_GPIO = 0,
  73         FALCON_MUX_RST,
  74         FALCON_MUX_NTR,
  75         FALCON_MUX_PPS,
  76         FALCON_MUX_MDIO,
  77         FALCON_MUX_LED,
  78         FALCON_MUX_SPI,
  79         FALCON_MUX_ASC,
  80         FALCON_MUX_I2C,
  81         FALCON_MUX_HOSTIF,
  82         FALCON_MUX_SLIC,
  83         FALCON_MUX_JTAG,
  84         FALCON_MUX_PCM,
  85         FALCON_MUX_MII,
  86         FALCON_MUX_PHY,
  87         FALCON_MUX_NONE = 0xffff,
  88 };
  89
  90 static struct pinctrl_pin_desc falcon_pads[PORTS * PINS];
  91 static int pad_count[PORTS];
  92
  93 static void lantiq_load_pin_desc(struct pinctrl_pin_desc *d, int bank, int len)
  94 {
  95         int base = bank * PINS;
  96         int i;
  97
  98         for (i = 0; i < len; i++) {
  99                 d[i].number = base + i;
 100                 d[i].name = kasprintf(GFP_KERNEL, "io%d", base + i);
 101         }
 102         pad_count[bank] = len;
 103 }
 104
 105 static struct ltq_mfp_pin falcon_mfp[] = {
 106         /*      pin             f0      f1      f2      f3 */
 107         MFP_FALCON(GPIO0,       RST,    GPIO,   NONE,   NONE),
 108         MFP_FALCON(GPIO1,       GPIO,   GPIO,   NONE,   NONE),
 109         MFP_FALCON(GPIO2,       GPIO,   GPIO,   NONE,   NONE),
 110         MFP_FALCON(GPIO3,       GPIO,   GPIO,   NONE,   NONE),
 111         MFP_FALCON(GPIO4,       NTR,    GPIO,   NONE,   NONE),
 112         MFP_FALCON(GPIO5,       NTR,    GPIO,   PPS,    NONE),
 113         MFP_FALCON(GPIO6,       RST,    GPIO,   NONE,   NONE),
 114         MFP_FALCON(GPIO7,       MDIO,   GPIO,   NONE,   NONE),
 115         MFP_FALCON(GPIO8,       MDIO,   GPIO,   NONE,   NONE),
 116         MFP_FALCON(GPIO9,       LED,    GPIO,   NONE,   NONE),
 117         MFP_FALCON(GPIO10,      LED,    GPIO,   NONE,   NONE),
 118         MFP_FALCON(GPIO11,      LED,    GPIO,   NONE,   NONE),
 119         MFP_FALCON(GPIO12,      LED,    GPIO,   NONE,   NONE),
 120         MFP_FALCON(GPIO13,      LED,    GPIO,   NONE,   NONE),
 121         MFP_FALCON(GPIO14,      LED,    GPIO,   NONE,   NONE),
 122         MFP_FALCON(GPIO32,      ASC,    GPIO,   NONE,   NONE),
 123         MFP_FALCON(GPIO33,      ASC,    GPIO,   NONE,   NONE),
 124         MFP_FALCON(GPIO34,      SPI,    GPIO,   NONE,   NONE),
 125         MFP_FALCON(GPIO35,      SPI,    GPIO,   NONE,   NONE),
 126         MFP_FALCON(GPIO36,      SPI,    GPIO,   NONE,   NONE),
 127         MFP_FALCON(GPIO37,      SPI,    GPIO,   NONE,   NONE),
 128         MFP_FALCON(GPIO38,      SPI,    GPIO,   NONE,   NONE),
 129         MFP_FALCON(GPIO39,      I2C,    GPIO,   NONE,   NONE),
 130         MFP_FALCON(GPIO40,      I2C,    GPIO,   NONE,   NONE),
 131         MFP_FALCON(GPIO41,      HOSTIF, GPIO,   HOSTIF, JTAG),
 132         MFP_FALCON(GPIO42,      HOSTIF, GPIO,   HOSTIF, NONE),
 133         MFP_FALCON(GPIO43,      SLIC,   GPIO,   NONE,   NONE),
 134         MFP_FALCON(GPIO44,      SLIC,   GPIO,   PCM,    ASC),
 135         MFP_FALCON(GPIO45,      SLIC,   GPIO,   PCM,    ASC),
 136         MFP_FALCON(GPIO64,      MII,    GPIO,   NONE,   NONE),
 137         MFP_FALCON(GPIO65,      MII,    GPIO,   NONE,   NONE),
 138         MFP_FALCON(GPIO66,      MII,    GPIO,   NONE,   NONE),
 139         MFP_FALCON(GPIO67,      MII,    GPIO,   NONE,   NONE),
 140         MFP_FALCON(GPIO68,      MII,    GPIO,   NONE,   NONE),
 141         MFP_FALCON(GPIO69,      MII,    GPIO,   NONE,   NONE),
 142         MFP_FALCON(GPIO70,      MII,    GPIO,   NONE,   NONE),
 143         MFP_FALCON(GPIO71,      MII,    GPIO,   NONE,   NONE),
 144         MFP_FALCON(GPIO72,      MII,    GPIO,   NONE,   NONE),
 145         MFP_FALCON(GPIO73,      MII,    GPIO,   NONE,   NONE),
 146         MFP_FALCON(GPIO74,      MII,    GPIO,   NONE,   NONE),
 147         MFP_FALCON(GPIO75,      MII,    GPIO,   NONE,   NONE),
 148         MFP_FALCON(GPIO76,      MII,    GPIO,   NONE,   NONE),
 149         MFP_FALCON(GPIO77,      MII,    GPIO,   NONE,   NONE),
 150         MFP_FALCON(GPIO78,      MII,    GPIO,   NONE,   NONE),
 151         MFP_FALCON(GPIO79,      MII,    GPIO,   NONE,   NONE),
 152         MFP_FALCON(GPIO80,      MII,    GPIO,   NONE,   NONE),
 153         MFP_FALCON(GPIO81,      MII,    GPIO,   NONE,   NONE),
 154         MFP_FALCON(GPIO82,      MII,    GPIO,   NONE,   NONE),
 155         MFP_FALCON(GPIO83,      MII,    GPIO,   NONE,   NONE),
 156         MFP_FALCON(GPIO84,      MII,    GPIO,   NONE,   NONE),
 157         MFP_FALCON(GPIO85,      MII,    GPIO,   NONE,   NONE),
 158         MFP_FALCON(GPIO86,      MII,    GPIO,   NONE,   NONE),
 159         MFP_FALCON(GPIO87,      MII,    GPIO,   NONE,   NONE),
 160         MFP_FALCON(GPIO88,      PHY,    GPIO,   NONE,   NONE),
 161 };
 162
 163 static const unsigned pins_por[] = {GPIO0};
 164 static const unsigned pins_ntr[] = {GPIO4};
 165 static const unsigned pins_ntr8k[] = {GPIO5};
 166 static const unsigned pins_pps[] = {GPIO5};
 167 static const unsigned pins_hrst[] = {GPIO6};
 168 static const unsigned pins_mdio[] = {GPIO7, GPIO8};
 169 static const unsigned pins_bled[] = {GPIO9, GPIO10, GPIO11,
 170                                         GPIO12, GPIO13, GPIO14};
 171 static const unsigned pins_asc0[] = {GPIO32, GPIO33};
 172 static const unsigned pins_spi[] = {GPIO34, GPIO35, GPIO36};
 173 static const unsigned pins_spi_cs0[] = {GPIO37};
 174 static const unsigned pins_spi_cs1[] = {GPIO38};
 175 static const unsigned pins_i2c[] = {GPIO39, GPIO40};
 176 static const unsigned pins_jtag[] = {GPIO41};
 177 static const unsigned pins_slic[] = {GPIO43, GPIO44, GPIO45};
 178 static const unsigned pins_pcm[] = {GPIO44, GPIO45};
 179 static const unsigned pins_asc1[] = {GPIO44, GPIO45};
 180
 181 static struct ltq_pin_group falcon_grps[] = {
 182         GRP_MUX("por", RST, pins_por),
 183         GRP_MUX("ntr", NTR, pins_ntr),
 184         GRP_MUX("ntr8k", NTR, pins_ntr8k),
 185         GRP_MUX("pps", PPS, pins_pps),
 186         GRP_MUX("hrst", RST, pins_hrst),
 187         GRP_MUX("mdio", MDIO, pins_mdio),
 188         GRP_MUX("bootled", LED, pins_bled),
 189         GRP_MUX("asc0", ASC, pins_asc0),
 190         GRP_MUX("spi", SPI, pins_spi),
 191         GRP_MUX("spi cs0", SPI, pins_spi_cs0),
 192         GRP_MUX("spi cs1", SPI, pins_spi_cs1),
 193         GRP_MUX("i2c", I2C, pins_i2c),
 194         GRP_MUX("jtag", JTAG, pins_jtag),
 195         GRP_MUX("slic", SLIC, pins_slic),
 196         GRP_MUX("pcm", PCM, pins_pcm),
 197         GRP_MUX("asc1", ASC, pins_asc1),
 198 };
 199
 200 static const char * const ltq_rst_grps[] = {"por", "hrst"};
 201 static const char * const ltq_ntr_grps[] = {"ntr", "ntr8k", "pps"};
 202 static const char * const ltq_mdio_grps[] = {"mdio"};
 203 static const char * const ltq_bled_grps[] = {"bootled"};
 204 static const char * const ltq_asc_grps[] = {"asc0", "asc1"};
 205 static const char * const ltq_spi_grps[] = {"spi", "spi cs0", "spi cs1"};
 206 static const char * const ltq_i2c_grps[] = {"i2c"};
 207 static const char * const ltq_jtag_grps[] = {"jtag"};
 208 static const char * const ltq_slic_grps[] = {"slic"};
 209 static const char * const ltq_pcm_grps[] = {"pcm"};
 210
 211 static struct ltq_pmx_func falcon_funcs[] = {
 212         {"rst",         ARRAY_AND_SIZE(ltq_rst_grps)},
 213         {"ntr",         ARRAY_AND_SIZE(ltq_ntr_grps)},
 214         {"mdio",        ARRAY_AND_SIZE(ltq_mdio_grps)},
 215         {"led",         ARRAY_AND_SIZE(ltq_bled_grps)},
 216         {"asc",         ARRAY_AND_SIZE(ltq_asc_grps)},
 217         {"spi",         ARRAY_AND_SIZE(ltq_spi_grps)},
 218         {"i2c",         ARRAY_AND_SIZE(ltq_i2c_grps)},
 219         {"jtag",        ARRAY_AND_SIZE(ltq_jtag_grps)},
 220         {"slic",        ARRAY_AND_SIZE(ltq_slic_grps)},
 221         {"pcm",         ARRAY_AND_SIZE(ltq_pcm_grps)},
 222 };
 223
 224
 225
 226
 227 /* ---------  pinconf related code --------- */
 228 static int falcon_pinconf_group_get(struct pinctrl_dev *pctrldev,
 229                                 unsigned group, unsigned long *config)
 230 {
 231         return -ENOTSUPP;
 232 }
 233
 234 static int falcon_pinconf_group_set(struct pinctrl_dev *pctrldev,
 235                                 unsigned group, unsigned long *configs,
 236                                 unsigned num_configs)
 237 {
 238         return -ENOTSUPP;
 239 }
 240
 241 static int falcon_pinconf_get(struct pinctrl_dev *pctrldev,
 242                                 unsigned pin, unsigned long *config)
 243 {
 244         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 245         enum ltq_pinconf_param param = LTQ_PINCONF_UNPACK_PARAM(*config);
 246         void __iomem *mem = info->membase[PORT(pin)];
 247
 248         switch (param) {
 249         case LTQ_PINCONF_PARAM_DRIVE_CURRENT:
 250                 *config = LTQ_PINCONF_PACK(param,
 251                         !!pad_getbit(mem, LTQ_PADC_DCC, PORT_PIN(pin)));
 252                 break;
 253
 254         case LTQ_PINCONF_PARAM_SLEW_RATE:
 255                 *config = LTQ_PINCONF_PACK(param,
 256                         !!pad_getbit(mem, LTQ_PADC_SRC, PORT_PIN(pin)));
 257                 break;
 258
 259         case LTQ_PINCONF_PARAM_PULL:
 260                 if (pad_getbit(mem, LTQ_PADC_PDEN, PORT_PIN(pin)))
 261                         *config = LTQ_PINCONF_PACK(param, 1);
 262                 else if (pad_getbit(mem, LTQ_PADC_PUEN, PORT_PIN(pin)))
 263                         *config = LTQ_PINCONF_PACK(param, 2);
 264                 else
 265                         *config = LTQ_PINCONF_PACK(param, 0);
 266
 267                 break;
 268
 269         default:
 270                 return -ENOTSUPP;
 271         }
 272
 273         return 0;
 274 }
 275
 276 static int falcon_pinconf_set(struct pinctrl_dev *pctrldev,
 277                         unsigned pin, unsigned long *configs,
 278                         unsigned num_configs)
 279 {
 280         enum ltq_pinconf_param param;
 281         int arg;
 282         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 283         void __iomem *mem = info->membase[PORT(pin)];
 284         u32 reg;
 285         int i;
 286
 287         for (i = 0; i < num_configs; i++) {
 288                 param = LTQ_PINCONF_UNPACK_PARAM(configs[i]);
 289                 arg = LTQ_PINCONF_UNPACK_ARG(configs[i]);
 290
 291                 switch (param) {
 292                 case LTQ_PINCONF_PARAM_DRIVE_CURRENT:
 293                         reg = LTQ_PADC_DCC;
 294                         break;
 295
 296                 case LTQ_PINCONF_PARAM_SLEW_RATE:
 297                         reg = LTQ_PADC_SRC;
 298                         break;
 299
 300                 case LTQ_PINCONF_PARAM_PULL:
 301                         if (arg == 1)
 302                                 reg = LTQ_PADC_PDEN;
 303                         else
 304                                 reg = LTQ_PADC_PUEN;
 305                         break;
 306
 307                 default:
 308                         pr_err("%s: Invalid config param %04x\n",
 309                         pinctrl_dev_get_name(pctrldev), param);
 310                         return -ENOTSUPP;
 311                 }
 312
 313                 pad_w32(mem, BIT(PORT_PIN(pin)), reg);
 314                 if (!(pad_r32(mem, reg) & BIT(PORT_PIN(pin))))
 315                         return -ENOTSUPP;
 316         } /* for each config */
 317
 318         return 0;
 319 }
 320
 321 static void falcon_pinconf_dbg_show(struct pinctrl_dev *pctrldev,
 322                         struct seq_file *s, unsigned offset)
 323 {
 324         unsigned long config;
 325         struct pin_desc *desc;
 326
 327         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 328         int port = PORT(offset);
 329
 330         seq_printf(s, " (port %d) mux %d -- ", port,
 331                 pad_r32(info->membase[port], LTQ_PADC_MUX(PORT_PIN(offset))));
 332
 333         config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_PULL, 0);
 334         if (!falcon_pinconf_get(pctrldev, offset, &config))
 335                 seq_printf(s, "pull %d ",
 336                         (int)LTQ_PINCONF_UNPACK_ARG(config));
 337
 338         config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_DRIVE_CURRENT, 0);
 339         if (!falcon_pinconf_get(pctrldev, offset, &config))
 340                 seq_printf(s, "drive-current %d ",
 341                         (int)LTQ_PINCONF_UNPACK_ARG(config));
 342
 343         config = LTQ_PINCONF_PACK(LTQ_PINCONF_PARAM_SLEW_RATE, 0);
 344         if (!falcon_pinconf_get(pctrldev, offset, &config))
 345                 seq_printf(s, "slew-rate %d ",
 346                         (int)LTQ_PINCONF_UNPACK_ARG(config));
 347
 348         desc = pin_desc_get(pctrldev, offset);
 349         if (desc) {
 350                 if (desc->gpio_owner)
 351                         seq_printf(s, " owner: %s", desc->gpio_owner);
 352         } else {
 353                 seq_printf(s, " not registered");
 354         }
 355 }
 356
 357 static void falcon_pinconf_group_dbg_show(struct pinctrl_dev *pctrldev,
 358                         struct seq_file *s, unsigned selector)
 359 {
 360 }
 361
 362 static const struct pinconf_ops falcon_pinconf_ops = {
 363         .pin_config_get                 = falcon_pinconf_get,
 364         .pin_config_set                 = falcon_pinconf_set,
 365         .pin_config_group_get           = falcon_pinconf_group_get,
 366         .pin_config_group_set           = falcon_pinconf_group_set,
 367         .pin_config_dbg_show            = falcon_pinconf_dbg_show,
 368         .pin_config_group_dbg_show      = falcon_pinconf_group_dbg_show,
 369 };
 370
 371 static struct pinctrl_desc falcon_pctrl_desc = {
 372         .owner          = THIS_MODULE,
 373         .pins           = falcon_pads,
 374         .confops        = &falcon_pinconf_ops,
 375 };
 376
 377 static inline int falcon_mux_apply(struct pinctrl_dev *pctrldev,
 378                         int mfp, int mux)
 379 {
 380         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 381         int port = PORT(info->mfp[mfp].pin);
 382
 383         if ((port >= PORTS) || (!info->membase[port]))
 384                 return -ENODEV;
 385
 386         pad_w32(info->membase[port], mux,
 387                 LTQ_PADC_MUX(PORT_PIN(info->mfp[mfp].pin)));
 388         return 0;
 389 }
 390
 391 static const struct ltq_cfg_param falcon_cfg_params[] = {
 392         {"lantiq,pull",                 LTQ_PINCONF_PARAM_PULL},
 393         {"lantiq,drive-current",        LTQ_PINCONF_PARAM_DRIVE_CURRENT},
 394         {"lantiq,slew-rate",            LTQ_PINCONF_PARAM_SLEW_RATE},
 395 };
 396
 397 static struct ltq_pinmux_info falcon_info = {
 398         .desc           = &falcon_pctrl_desc,
 399         .apply_mux      = falcon_mux_apply,
 400         .params         = falcon_cfg_params,
 401         .num_params     = ARRAY_SIZE(falcon_cfg_params),
 402 };
 403
 404
 405
 406
 407 /* --------- register the pinctrl layer --------- */
 408
 409 int pinctrl_falcon_get_range_size(int id)
 410 {
 411         u32 avail;
 412
 413         if ((id >= PORTS) || (!falcon_info.membase[id]))
 414                 return -EINVAL;
 415
 416         avail = pad_r32(falcon_info.membase[id], LTQ_PADC_AVAIL);
 417
 418         return fls(avail);
 419 }
 420
 421 void pinctrl_falcon_add_gpio_range(struct pinctrl_gpio_range *range)
 422 {
 423         pinctrl_add_gpio_range(falcon_info.pctrl, range);
 424 }
 425
 426 static int pinctrl_falcon_probe(struct platform_device *pdev)
 427 {
 428         struct device_node *np;
 429         int pad_count = 0;
 430         int ret = 0;
 431
 432         /* load and remap the pad resources of the different banks */
 433         for_each_compatible_node(np, NULL, "lantiq,pad-falcon") {
 434                 struct platform_device *ppdev = of_find_device_by_node(np);
 435                 const __be32 *bank = of_get_property(np, "lantiq,bank", NULL);
 436                 struct resource res;
 437                 u32 avail;
 438                 int pins;
 439
 440                 if (!of_device_is_available(np))
 441                         continue;
 442
 443                 if (!ppdev) {
 444                         dev_err(&pdev->dev, "failed to find pad pdev\n");
 445                         continue;
 446                 }
 447                 if (!bank || *bank >= PORTS)
 448                         continue;
 449                 if (of_address_to_resource(np, 0, &res))
 450                         continue;
 451                 falcon_info.clk[*bank] = clk_get(&ppdev->dev, NULL);
 452                 if (IS_ERR(falcon_info.clk[*bank])) {
 453                         dev_err(&ppdev->dev, "failed to get clock\n");
 454                         of_node_put(np);
 455                         return PTR_ERR(falcon_info.clk[*bank]);
 456                 }
 457                 falcon_info.membase[*bank] = devm_ioremap_resource(&pdev->dev,
 458                                                                    &res);
 459                 if (IS_ERR(falcon_info.membase[*bank])) {
 460                         of_node_put(np);
 461                         return PTR_ERR(falcon_info.membase[*bank]);
 462                 }
 463
 464                 avail = pad_r32(falcon_info.membase[*bank],
 465                                         LTQ_PADC_AVAIL);
 466                 pins = fls(avail);
 467                 lantiq_load_pin_desc(&falcon_pads[pad_count], *bank, pins);
 468                 pad_count += pins;
 469                 clk_enable(falcon_info.clk[*bank]);
 470                 dev_dbg(&pdev->dev, "found %s with %d pads\n",
 471                                 res.name, pins);
 472         }
 473         dev_dbg(&pdev->dev, "found a total of %d pads\n", pad_count);
 474         falcon_pctrl_desc.name  = dev_name(&pdev->dev);
 475         falcon_pctrl_desc.npins = pad_count;
 476
 477         falcon_info.mfp         = falcon_mfp;
 478         falcon_info.num_mfp     = ARRAY_SIZE(falcon_mfp);
 479         falcon_info.grps        = falcon_grps;
 480         falcon_info.num_grps    = ARRAY_SIZE(falcon_grps);
 481         falcon_info.funcs       = falcon_funcs;
 482         falcon_info.num_funcs   = ARRAY_SIZE(falcon_funcs);
 483
 484         ret = ltq_pinctrl_register(pdev, &falcon_info);
 485         if (!ret)
 486                 dev_info(&pdev->dev, "Init done\n");
 487         return ret;
 488 }
 489
 490 static const struct of_device_id falcon_match[] = {
 491         { .compatible = "lantiq,pinctrl-falcon" },
 492         {},
 493 };
 494 MODULE_DEVICE_TABLE(of, falcon_match);
 495
 496 static struct platform_driver pinctrl_falcon_driver = {
 497         .probe = pinctrl_falcon_probe,
 498         .driver = {
 499                 .name = "pinctrl-falcon",
 500                 .of_match_table = falcon_match,
 501         },
 502 };
 503
 504 int __init pinctrl_falcon_init(void)
 505 {
 506         return platform_driver_register(&pinctrl_falcon_driver);
 507 }
 508
 509 core_initcall_sync(pinctrl_falcon_init);