1 // SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2 /* 3 * Copyright (C) 2024 Canaan Bright Sight Co. Ltd 4 * Copyright (C) 2024 Ze Huang <18771902331@163.com> 5 */ 6 #include <linux/module.h> 7 #include <linux/device.h> 8 #include <linux/of.h> 9 #include <linux/of_address.h> 10 #include <linux/of_device.h> 11 #include <linux/platform_device.h> 12 #include <linux/pinctrl/pinctrl.h> 13 #include <linux/pinctrl/pinmux.h> 14 #include <linux/pinctrl/pinconf.h> 15 #include <linux/pinctrl/pinconf-generic.h> 16 #include <linux/regmap.h> 17 #include <linux/seq_file.h> 18 19 #include "core.h" 20 #include "pinconf.h" 21 22 #define K230_NPINS 64 23 24 #define K230_SHIFT_ST (0) 25 #define K230_SHIFT_DS (1) 26 #define K230_SHIFT_BIAS (5) 27 #define K230_SHIFT_PD (5) 28 #define K230_SHIFT_PU (6) 29 #define K230_SHIFT_OE (7) 30 #define K230_SHIFT_IE (8) 31 #define K230_SHIFT_MSC (9) 32 #define K230_SHIFT_SL (10) 33 #define K230_SHIFT_SEL (11) 34 35 #define K230_PC_ST BIT(0) 36 #define K230_PC_DS GENMASK(4, 1) 37 #define K230_PC_PD BIT(5) 38 #define K230_PC_PU BIT(6) 39 #define K230_PC_BIAS GENMASK(6, 5) 40 #define K230_PC_OE BIT(7) 41 #define K230_PC_IE BIT(8) 42 #define K230_PC_MSC BIT(9) 43 #define K230_PC_SL BIT(10) 44 #define K230_PC_SEL GENMASK(13, 11) 45 46 struct k230_pin_conf { 47 unsigned int func; 48 unsigned long *configs; 49 unsigned int nconfigs; 50 }; 51 52 struct k230_pin_group { 53 const char *name; 54 unsigned int *pins; 55 unsigned int num_pins; 56 57 struct k230_pin_conf *data; 58 }; 59 60 struct k230_pmx_func { 61 const char *name; 62 const char **groups; 63 unsigned int *group_idx; 64 unsigned int ngroups; 65 }; 66 67 struct k230_pinctrl { 68 struct pinctrl_desc pctl; 69 struct pinctrl_dev *pctl_dev; 70 struct regmap *regmap_base; 71 void __iomem *base; 72 struct k230_pin_group *groups; 73 unsigned int ngroups; 74 struct k230_pmx_func *functions; 75 unsigned int nfunctions; 76 }; 77 78 static const struct regmap_config k230_regmap_config = { 79 .name = "canaan,pinctrl", 80 .reg_bits = 32, 81 .val_bits = 32, 82 .max_register = 0x100, 83 .reg_stride = 4, 84 }; 85 86 static int k230_get_groups_count(struct pinctrl_dev *pctldev) 87 { 88 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 89 90 return info->ngroups; 91 } 92 93 static const char *k230_get_group_name(struct pinctrl_dev *pctldev, 94 unsigned int selector) 95 { 96 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 97 98 return info->groups[selector].name; 99 } 100 101 static int k230_get_group_pins(struct pinctrl_dev *pctldev, 102 unsigned int selector, 103 const unsigned int **pins, 104 unsigned int *num_pins) 105 { 106 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 107 108 if (selector >= info->ngroups) 109 return -EINVAL; 110 111 *pins = info->groups[selector].pins; 112 *num_pins = info->groups[selector].num_pins; 113 114 return 0; 115 } 116 117 static inline const struct k230_pmx_func *k230_name_to_funtion( 118 const struct k230_pinctrl *info, const char *name) 119 { 120 unsigned int i; 121 122 for (i = 0; i < info->nfunctions; i++) { 123 if (!strcmp(info->functions[i].name, name)) 124 return &info->functions[i]; 125 } 126 127 return NULL; 128 } 129 130 static struct pinctrl_pin_desc k230_pins[] = { 131 PINCTRL_PIN(0, "IO0"), PINCTRL_PIN(1, "IO1"), PINCTRL_PIN(2, "IO2"), 132 PINCTRL_PIN(3, "IO3"), PINCTRL_PIN(4, "IO4"), PINCTRL_PIN(5, "IO5"), 133 PINCTRL_PIN(6, "IO6"), PINCTRL_PIN(7, "IO7"), PINCTRL_PIN(8, "IO8"), 134 PINCTRL_PIN(9, "IO9"), PINCTRL_PIN(10, "IO10"), PINCTRL_PIN(11, "IO11"), 135 PINCTRL_PIN(12, "IO12"), PINCTRL_PIN(13, "IO13"), PINCTRL_PIN(14, "IO14"), 136 PINCTRL_PIN(15, "IO15"), PINCTRL_PIN(16, "IO16"), PINCTRL_PIN(17, "IO17"), 137 PINCTRL_PIN(18, "IO18"), PINCTRL_PIN(19, "IO19"), PINCTRL_PIN(20, "IO20"), 138 PINCTRL_PIN(21, "IO21"), PINCTRL_PIN(22, "IO22"), PINCTRL_PIN(23, "IO23"), 139 PINCTRL_PIN(24, "IO24"), PINCTRL_PIN(25, "IO25"), PINCTRL_PIN(26, "IO26"), 140 PINCTRL_PIN(27, "IO27"), PINCTRL_PIN(28, "IO28"), PINCTRL_PIN(29, "IO29"), 141 PINCTRL_PIN(30, "IO30"), PINCTRL_PIN(31, "IO31"), PINCTRL_PIN(32, "IO32"), 142 PINCTRL_PIN(33, "IO33"), PINCTRL_PIN(34, "IO34"), PINCTRL_PIN(35, "IO35"), 143 PINCTRL_PIN(36, "IO36"), PINCTRL_PIN(37, "IO37"), PINCTRL_PIN(38, "IO38"), 144 PINCTRL_PIN(39, "IO39"), PINCTRL_PIN(40, "IO40"), PINCTRL_PIN(41, "IO41"), 145 PINCTRL_PIN(42, "IO42"), PINCTRL_PIN(43, "IO43"), PINCTRL_PIN(44, "IO44"), 146 PINCTRL_PIN(45, "IO45"), PINCTRL_PIN(46, "IO46"), PINCTRL_PIN(47, "IO47"), 147 PINCTRL_PIN(48, "IO48"), PINCTRL_PIN(49, "IO49"), PINCTRL_PIN(50, "IO50"), 148 PINCTRL_PIN(51, "IO51"), PINCTRL_PIN(52, "IO52"), PINCTRL_PIN(53, "IO53"), 149 PINCTRL_PIN(54, "IO54"), PINCTRL_PIN(55, "IO55"), PINCTRL_PIN(56, "IO56"), 150 PINCTRL_PIN(57, "IO57"), PINCTRL_PIN(58, "IO58"), PINCTRL_PIN(59, "IO59"), 151 PINCTRL_PIN(60, "IO60"), PINCTRL_PIN(61, "IO61"), PINCTRL_PIN(62, "IO62"), 152 PINCTRL_PIN(63, "IO63") 153 }; 154 155 static void k230_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev, 156 struct seq_file *s, unsigned int offset) 157 { 158 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 159 u32 val, bias, drive, input, slew, schmitt, power; 160 struct k230_pin_group *grp = k230_pins[offset].drv_data; 161 static const char * const biasing[] = { 162 "pull none", "pull down", "pull up", "" }; 163 static const char * const enable[] = { 164 "disable", "enable" }; 165 static const char * const power_source[] = { 166 "3V3", "1V8" }; 167 168 regmap_read(info->regmap_base, offset * 4, &val); 169 170 drive = (val & K230_PC_DS) >> K230_SHIFT_DS; 171 bias = (val & K230_PC_BIAS) >> K230_SHIFT_BIAS; 172 input = (val & K230_PC_IE) >> K230_SHIFT_IE; 173 slew = (val & K230_PC_SL) >> K230_SHIFT_SL; 174 schmitt = (val & K230_PC_ST) >> K230_SHIFT_ST; 175 power = (val & K230_PC_MSC) >> K230_SHIFT_MSC; 176 177 seq_printf(s, "%s - strength %d - %s - %s - slewrate %s - schmitt %s - %s", 178 grp ? grp->name : "unknown", 179 drive, 180 biasing[bias], 181 input ? "input" : "output", 182 enable[slew], 183 enable[schmitt], 184 power_source[power]); 185 } 186 187 static int k230_dt_node_to_map(struct pinctrl_dev *pctldev, 188 struct device_node *np_config, 189 struct pinctrl_map **map, 190 unsigned int *num_maps) 191 { 192 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 193 struct device *dev = info->pctl_dev->dev; 194 const struct k230_pmx_func *func; 195 const struct k230_pin_group *grp; 196 struct pinctrl_map *new_map; 197 int map_num, i, j, idx; 198 unsigned int grp_id; 199 200 func = k230_name_to_funtion(info, np_config->name); 201 if (!func) { 202 dev_err(dev, "function %s not found\n", np_config->name); 203 return -EINVAL; 204 } 205 206 map_num = 0; 207 for (i = 0; i < func->ngroups; ++i) { 208 grp_id = func->group_idx[i]; 209 /* npins of config map plus a mux map */ 210 map_num += info->groups[grp_id].num_pins + 1; 211 } 212 213 new_map = kcalloc(map_num, sizeof(*new_map), GFP_KERNEL); 214 if (!new_map) 215 return -ENOMEM; 216 *map = new_map; 217 *num_maps = map_num; 218 219 idx = 0; 220 for (i = 0; i < func->ngroups; ++i) { 221 grp_id = func->group_idx[i]; 222 grp = &info->groups[grp_id]; 223 new_map[idx].type = PIN_MAP_TYPE_MUX_GROUP; 224 new_map[idx].data.mux.group = grp->name; 225 new_map[idx].data.mux.function = np_config->name; 226 idx++; 227 228 for (j = 0; j < grp->num_pins; ++j) { 229 new_map[idx].type = PIN_MAP_TYPE_CONFIGS_PIN; 230 new_map[idx].data.configs.group_or_pin = 231 pin_get_name(pctldev, grp->pins[j]); 232 new_map[idx].data.configs.configs = 233 grp->data[j].configs; 234 new_map[idx].data.configs.num_configs = 235 grp->data[j].nconfigs; 236 idx++; 237 } 238 } 239 240 return 0; 241 } 242 243 static void k230_dt_free_map(struct pinctrl_dev *pctldev, 244 struct pinctrl_map *map, unsigned int num_maps) 245 { 246 kfree(map); 247 } 248 249 static const struct pinctrl_ops k230_pctrl_ops = { 250 .get_groups_count = k230_get_groups_count, 251 .get_group_name = k230_get_group_name, 252 .get_group_pins = k230_get_group_pins, 253 .pin_dbg_show = k230_pinctrl_pin_dbg_show, 254 .dt_node_to_map = k230_dt_node_to_map, 255 .dt_free_map = k230_dt_free_map, 256 }; 257 258 static int k230_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, 259 unsigned long *config) 260 { 261 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 262 enum pin_config_param param = pinconf_to_config_param(*config); 263 unsigned int val, arg; 264 265 regmap_read(info->regmap_base, pin * 4, &val); 266 267 switch (param) { 268 case PIN_CONFIG_INPUT_SCHMITT_ENABLE: 269 arg = (val & K230_PC_ST) ? 1 : 0; 270 break; 271 case PIN_CONFIG_DRIVE_STRENGTH: 272 arg = (val & K230_PC_DS) >> K230_SHIFT_DS; 273 break; 274 case PIN_CONFIG_BIAS_DISABLE: 275 arg = (val & K230_PC_BIAS) ? 0 : 1; 276 break; 277 case PIN_CONFIG_BIAS_PULL_DOWN: 278 arg = (val & K230_PC_PD) ? 1 : 0; 279 break; 280 case PIN_CONFIG_BIAS_PULL_UP: 281 arg = (val & K230_PC_PU) ? 1 : 0; 282 break; 283 case PIN_CONFIG_OUTPUT_ENABLE: 284 arg = (val & K230_PC_OE) ? 1 : 0; 285 break; 286 case PIN_CONFIG_INPUT_ENABLE: 287 arg = (val & K230_PC_IE) ? 1 : 0; 288 break; 289 case PIN_CONFIG_POWER_SOURCE: 290 arg = (val & K230_PC_MSC) ? 1 : 0; 291 break; 292 case PIN_CONFIG_SLEW_RATE: 293 arg = (val & K230_PC_SL) ? 1 : 0; 294 break; 295 default: 296 return -EINVAL; 297 } 298 299 *config = pinconf_to_config_packed(param, arg); 300 301 return 0; 302 } 303 304 static int k230_pinconf_set_param(struct pinctrl_dev *pctldev, unsigned int pin, 305 enum pin_config_param param, unsigned int arg) 306 { 307 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 308 unsigned int val; 309 310 regmap_read(info->regmap_base, pin * 4, &val); 311 312 switch (param) { 313 case PIN_CONFIG_INPUT_SCHMITT_ENABLE: 314 if (arg) 315 val |= K230_PC_ST; 316 else 317 val &= ~K230_PC_ST; 318 break; 319 case PIN_CONFIG_DRIVE_STRENGTH: 320 val &= ~K230_PC_DS; 321 val |= (arg << K230_SHIFT_DS) & K230_PC_DS; 322 break; 323 case PIN_CONFIG_BIAS_DISABLE: 324 val &= ~K230_PC_BIAS; 325 break; 326 case PIN_CONFIG_BIAS_PULL_DOWN: 327 if (!arg) 328 return -EINVAL; 329 val |= K230_PC_PD; 330 break; 331 case PIN_CONFIG_BIAS_PULL_UP: 332 if (!arg) 333 return -EINVAL; 334 val |= K230_PC_PU; 335 break; 336 case PIN_CONFIG_OUTPUT_ENABLE: 337 if (!arg) 338 return -EINVAL; 339 val |= K230_PC_OE; 340 break; 341 case PIN_CONFIG_INPUT_ENABLE: 342 if (!arg) 343 return -EINVAL; 344 val |= K230_PC_IE; 345 break; 346 case PIN_CONFIG_POWER_SOURCE: 347 if (arg) 348 val |= K230_PC_MSC; 349 else 350 val &= ~K230_PC_MSC; 351 break; 352 case PIN_CONFIG_SLEW_RATE: 353 if (arg) 354 val |= K230_PC_SL; 355 else 356 val &= ~K230_PC_SL; 357 break; 358 default: 359 return -EINVAL; 360 } 361 362 regmap_write(info->regmap_base, pin * 4, val); 363 364 return 0; 365 } 366 367 static int k230_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, 368 unsigned long *configs, unsigned int num_configs) 369 { 370 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 371 struct device *dev = info->pctl_dev->dev; 372 enum pin_config_param param; 373 unsigned int arg, i; 374 int ret; 375 376 if (pin >= K230_NPINS) { 377 dev_err(dev, "pin number out of range\n"); 378 return -EINVAL; 379 } 380 381 for (i = 0; i < num_configs; i++) { 382 param = pinconf_to_config_param(configs[i]); 383 arg = pinconf_to_config_argument(configs[i]); 384 ret = k230_pinconf_set_param(pctldev, pin, param, arg); 385 if (ret) 386 return ret; 387 } 388 389 return 0; 390 } 391 392 static void k230_pconf_dbg_show(struct pinctrl_dev *pctldev, 393 struct seq_file *s, unsigned int pin) 394 { 395 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 396 unsigned int val; 397 398 regmap_read(info->regmap_base, pin * 4, &val); 399 400 seq_printf(s, " 0x%08x", val); 401 } 402 403 static const struct pinconf_ops k230_pinconf_ops = { 404 .is_generic = true, 405 .pin_config_get = k230_pinconf_get, 406 .pin_config_set = k230_pinconf_set, 407 .pin_config_dbg_show = k230_pconf_dbg_show, 408 }; 409 410 static int k230_get_functions_count(struct pinctrl_dev *pctldev) 411 { 412 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 413 414 return info->nfunctions; 415 } 416 417 static const char *k230_get_fname(struct pinctrl_dev *pctldev, 418 unsigned int selector) 419 { 420 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 421 422 return info->functions[selector].name; 423 } 424 425 static int k230_get_groups(struct pinctrl_dev *pctldev, unsigned int selector, 426 const char * const **groups, unsigned int *num_groups) 427 { 428 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 429 430 *groups = info->functions[selector].groups; 431 *num_groups = info->functions[selector].ngroups; 432 433 return 0; 434 } 435 436 static int k230_set_mux(struct pinctrl_dev *pctldev, unsigned int selector, 437 unsigned int group) 438 { 439 struct k230_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); 440 const struct k230_pin_conf *data = info->groups[group].data; 441 struct k230_pin_group *grp = &info->groups[group]; 442 const unsigned int *pins = grp->pins; 443 struct regmap *regmap; 444 unsigned int value, mask; 445 int cnt, reg; 446 447 regmap = info->regmap_base; 448 449 for (cnt = 0; cnt < grp->num_pins; cnt++) { 450 reg = pins[cnt] * 4; 451 value = data[cnt].func << K230_SHIFT_SEL; 452 mask = K230_PC_SEL; 453 regmap_update_bits(regmap, reg, mask, value); 454 k230_pins[pins[cnt]].drv_data = grp; 455 } 456 457 return 0; 458 } 459 460 static const struct pinmux_ops k230_pmxops = { 461 .get_functions_count = k230_get_functions_count, 462 .get_function_name = k230_get_fname, 463 .get_function_groups = k230_get_groups, 464 .set_mux = k230_set_mux, 465 .strict = true, 466 }; 467 468 static int k230_pinctrl_parse_groups(struct device_node *np, 469 struct k230_pin_group *grp, 470 struct k230_pinctrl *info, 471 unsigned int index) 472 { 473 struct device *dev = info->pctl_dev->dev; 474 const __be32 *list; 475 int size, i, ret; 476 477 grp->name = np->name; 478 479 list = of_get_property(np, "pinmux", &size); 480 if (!list) { 481 dev_err(dev, "failed to get pinmux property\n"); 482 return -EINVAL; 483 } 484 size /= sizeof(*list); 485 486 grp->num_pins = size; 487 grp->pins = devm_kcalloc(dev, grp->num_pins, sizeof(*grp->pins), 488 GFP_KERNEL); 489 grp->data = devm_kcalloc(dev, grp->num_pins, sizeof(*grp->data), 490 GFP_KERNEL); 491 if (!grp->pins || !grp->data) 492 return -ENOMEM; 493 494 for (i = 0; i < size; i++) { 495 unsigned int mux_data = be32_to_cpu(*list++); 496 497 grp->pins[i] = (mux_data >> 8); 498 grp->data[i].func = (mux_data & 0xff); 499 500 ret = pinconf_generic_parse_dt_config(np, NULL, 501 &grp->data[i].configs, 502 &grp->data[i].nconfigs); 503 if (ret) 504 return ret; 505 } 506 507 return 0; 508 } 509 510 static int k230_pinctrl_parse_functions(struct device_node *np, 511 struct k230_pinctrl *info, 512 unsigned int index) 513 { 514 struct device *dev = info->pctl_dev->dev; 515 struct k230_pmx_func *func; 516 struct k230_pin_group *grp; 517 static unsigned int idx, i; 518 int ret; 519 520 func = &info->functions[index]; 521 522 func->name = np->name; 523 func->ngroups = of_get_child_count(np); 524 if (func->ngroups <= 0) 525 return 0; 526 527 func->groups = devm_kcalloc(dev, func->ngroups, 528 sizeof(*func->groups), GFP_KERNEL); 529 func->group_idx = devm_kcalloc(dev, func->ngroups, 530 sizeof(*func->group_idx), GFP_KERNEL); 531 if (!func->groups || !func->group_idx) 532 return -ENOMEM; 533 534 i = 0; 535 536 for_each_child_of_node_scoped(np, child) { 537 func->groups[i] = child->name; 538 func->group_idx[i] = idx; 539 grp = &info->groups[idx]; 540 idx++; 541 ret = k230_pinctrl_parse_groups(child, grp, info, i++); 542 if (ret) 543 return ret; 544 } 545 546 return 0; 547 } 548 549 static void k230_pinctrl_child_count(struct k230_pinctrl *info, 550 struct device_node *np) 551 { 552 for_each_child_of_node_scoped(np, child) { 553 info->nfunctions++; 554 info->ngroups += of_get_child_count(child); 555 } 556 } 557 558 static int k230_pinctrl_parse_dt(struct platform_device *pdev, 559 struct k230_pinctrl *info) 560 { 561 struct device *dev = &pdev->dev; 562 struct device_node *np = dev->of_node; 563 unsigned int i; 564 int ret; 565 566 k230_pinctrl_child_count(info, np); 567 568 info->functions = devm_kcalloc(dev, info->nfunctions, 569 sizeof(*info->functions), GFP_KERNEL); 570 info->groups = devm_kcalloc(dev, info->ngroups, 571 sizeof(*info->groups), GFP_KERNEL); 572 if (!info->functions || !info->groups) 573 return -ENOMEM; 574 575 i = 0; 576 577 for_each_child_of_node_scoped(np, child) { 578 ret = k230_pinctrl_parse_functions(child, info, i++); 579 if (ret) { 580 dev_err(dev, "failed to parse function\n"); 581 return ret; 582 } 583 } 584 585 return 0; 586 } 587 588 static int k230_pinctrl_probe(struct platform_device *pdev) 589 { 590 struct device *dev = &pdev->dev; 591 struct k230_pinctrl *info; 592 struct pinctrl_desc *pctl; 593 int ret; 594 595 info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); 596 if (!info) 597 return -ENOMEM; 598 599 pctl = &info->pctl; 600 601 pctl->name = "k230-pinctrl"; 602 pctl->owner = THIS_MODULE; 603 pctl->pins = k230_pins; 604 pctl->npins = ARRAY_SIZE(k230_pins); 605 pctl->pctlops = &k230_pctrl_ops; 606 pctl->pmxops = &k230_pmxops; 607 pctl->confops = &k230_pinconf_ops; 608 609 info->base = devm_platform_ioremap_resource(pdev, 0); 610 if (IS_ERR(info->base)) 611 return PTR_ERR(info->base); 612 613 info->regmap_base = devm_regmap_init_mmio(dev, info->base, 614 &k230_regmap_config); 615 if (IS_ERR(info->regmap_base)) 616 return dev_err_probe(dev, PTR_ERR(info->regmap_base), 617 "failed to init regmap\n"); 618 619 ret = k230_pinctrl_parse_dt(pdev, info); 620 if (ret) 621 return ret; 622 623 info->pctl_dev = devm_pinctrl_register(dev, pctl, info); 624 if (IS_ERR(info->pctl_dev)) 625 return dev_err_probe(dev, PTR_ERR(info->pctl_dev), 626 "devm_pinctrl_register failed\n"); 627 628 return 0; 629 } 630 631 static const struct of_device_id k230_dt_ids[] = { 632 { .compatible = "canaan,k230-pinctrl", }, 633 { /* sentinel */ } 634 }; 635 MODULE_DEVICE_TABLE(of, k230_dt_ids); 636 637 static struct platform_driver k230_pinctrl_driver = { 638 .probe = k230_pinctrl_probe, 639 .driver = { 640 .name = "k230-pinctrl", 641 .of_match_table = k230_dt_ids, 642 }, 643 }; 644 module_platform_driver(k230_pinctrl_driver); 645 646 MODULE_LICENSE("GPL"); 647 MODULE_AUTHOR("Ze Huang <18771902331@163.com>"); 648 MODULE_DESCRIPTION("Canaan K230 pinctrl driver"); 649