1// SPDX-License-Identifier: GPL-2.0 2/* Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> */ 3 4#include <linux/err.h> 5#include <linux/io.h> 6#include <linux/mod_devicetable.h> 7#include <linux/module.h> 8#include <linux/pinctrl/pinconf-generic.h> 9#include <linux/pinctrl/pinctrl.h> 10#include <linux/pinctrl/pinmux.h> 11#include <linux/platform_device.h> 12#include <linux/slab.h> 13#include <linux/string_helpers.h> 14 15#include "../core.h" 16#include "../pinmux.h" 17 18#define BCM4908_NUM_PINS 86 19 20#define BCM4908_TEST_PORT_BLOCK_EN_LSB 0x00 21#define BCM4908_TEST_PORT_BLOCK_DATA_MSB 0x04 22#define BCM4908_TEST_PORT_BLOCK_DATA_LSB 0x08 23#define BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT 12 24#define BCM4908_TEST_PORT_COMMAND 0x0c 25#define BCM4908_TEST_PORT_CMD_LOAD_MUX_REG 0x00000021 26 27struct bcm4908_pinctrl { 28 struct device *dev; 29 void __iomem *base; 30 struct mutex mutex; 31 struct pinctrl_dev *pctldev; 32 struct pinctrl_desc pctldesc; 33}; 34 35/* 36 * Groups 37 */ 38 39struct bcm4908_pinctrl_pin_setup { 40 unsigned int number; 41 unsigned int function; 42}; 43 44static const struct bcm4908_pinctrl_pin_setup led_0_pins_a[] = { 45 { 0, 3 }, 46}; 47 48static const struct bcm4908_pinctrl_pin_setup led_1_pins_a[] = { 49 { 1, 3 }, 50}; 51 52static const struct bcm4908_pinctrl_pin_setup led_2_pins_a[] = { 53 { 2, 3 }, 54}; 55 56static const struct bcm4908_pinctrl_pin_setup led_3_pins_a[] = { 57 { 3, 3 }, 58}; 59 60static const struct bcm4908_pinctrl_pin_setup led_4_pins_a[] = { 61 { 4, 3 }, 62}; 63 64static const struct bcm4908_pinctrl_pin_setup led_5_pins_a[] = { 65 { 5, 3 }, 66}; 67 68static const struct bcm4908_pinctrl_pin_setup led_6_pins_a[] = { 69 { 6, 3 }, 70}; 71 72static const struct bcm4908_pinctrl_pin_setup led_7_pins_a[] = { 73 { 7, 3 }, 74}; 75 76static const struct bcm4908_pinctrl_pin_setup led_8_pins_a[] = { 77 { 8, 3 }, 78}; 79 80static const struct bcm4908_pinctrl_pin_setup led_9_pins_a[] = { 81 { 9, 3 }, 82}; 83 84static const struct bcm4908_pinctrl_pin_setup led_10_pins_a[] = { 85 { 10, 3 }, 86}; 87 88static const struct bcm4908_pinctrl_pin_setup led_11_pins_a[] = { 89 { 11, 3 }, 90}; 91 92static const struct bcm4908_pinctrl_pin_setup led_12_pins_a[] = { 93 { 12, 3 }, 94}; 95 96static const struct bcm4908_pinctrl_pin_setup led_13_pins_a[] = { 97 { 13, 3 }, 98}; 99 100static const struct bcm4908_pinctrl_pin_setup led_14_pins_a[] = { 101 { 14, 3 }, 102}; 103 104static const struct bcm4908_pinctrl_pin_setup led_15_pins_a[] = { 105 { 15, 3 }, 106}; 107 108static const struct bcm4908_pinctrl_pin_setup led_16_pins_a[] = { 109 { 16, 3 }, 110}; 111 112static const struct bcm4908_pinctrl_pin_setup led_17_pins_a[] = { 113 { 17, 3 }, 114}; 115 116static const struct bcm4908_pinctrl_pin_setup led_18_pins_a[] = { 117 { 18, 3 }, 118}; 119 120static const struct bcm4908_pinctrl_pin_setup led_19_pins_a[] = { 121 { 19, 3 }, 122}; 123 124static const struct bcm4908_pinctrl_pin_setup led_20_pins_a[] = { 125 { 20, 3 }, 126}; 127 128static const struct bcm4908_pinctrl_pin_setup led_21_pins_a[] = { 129 { 21, 3 }, 130}; 131 132static const struct bcm4908_pinctrl_pin_setup led_22_pins_a[] = { 133 { 22, 3 }, 134}; 135 136static const struct bcm4908_pinctrl_pin_setup led_23_pins_a[] = { 137 { 23, 3 }, 138}; 139 140static const struct bcm4908_pinctrl_pin_setup led_24_pins_a[] = { 141 { 24, 3 }, 142}; 143 144static const struct bcm4908_pinctrl_pin_setup led_25_pins_a[] = { 145 { 25, 3 }, 146}; 147 148static const struct bcm4908_pinctrl_pin_setup led_26_pins_a[] = { 149 { 26, 3 }, 150}; 151 152static const struct bcm4908_pinctrl_pin_setup led_27_pins_a[] = { 153 { 27, 3 }, 154}; 155 156static const struct bcm4908_pinctrl_pin_setup led_28_pins_a[] = { 157 { 28, 3 }, 158}; 159 160static const struct bcm4908_pinctrl_pin_setup led_29_pins_a[] = { 161 { 29, 3 }, 162}; 163 164static const struct bcm4908_pinctrl_pin_setup led_30_pins_a[] = { 165 { 30, 3 }, 166}; 167 168static const struct bcm4908_pinctrl_pin_setup led_31_pins_a[] = { 169 { 31, 3 }, 170}; 171 172static const struct bcm4908_pinctrl_pin_setup led_10_pins_b[] = { 173 { 8, 2 }, 174}; 175 176static const struct bcm4908_pinctrl_pin_setup led_11_pins_b[] = { 177 { 9, 2 }, 178}; 179 180static const struct bcm4908_pinctrl_pin_setup led_12_pins_b[] = { 181 { 0, 2 }, 182}; 183 184static const struct bcm4908_pinctrl_pin_setup led_13_pins_b[] = { 185 { 1, 2 }, 186}; 187 188static const struct bcm4908_pinctrl_pin_setup led_31_pins_b[] = { 189 { 30, 2 }, 190}; 191 192static const struct bcm4908_pinctrl_pin_setup hs_uart_pins[] = { 193 { 10, 0 }, /* CTS */ 194 { 11, 0 }, /* RTS */ 195 { 12, 0 }, /* RXD */ 196 { 13, 0 }, /* TXD */ 197}; 198 199static const struct bcm4908_pinctrl_pin_setup i2c_pins_a[] = { 200 { 18, 0 }, /* SDA */ 201 { 19, 0 }, /* SCL */ 202}; 203 204static const struct bcm4908_pinctrl_pin_setup i2c_pins_b[] = { 205 { 22, 0 }, /* SDA */ 206 { 23, 0 }, /* SCL */ 207}; 208 209static const struct bcm4908_pinctrl_pin_setup i2s_pins[] = { 210 { 27, 0 }, /* MCLK */ 211 { 28, 0 }, /* LRCK */ 212 { 29, 0 }, /* SDATA */ 213 { 30, 0 }, /* SCLK */ 214}; 215 216static const struct bcm4908_pinctrl_pin_setup nand_ctrl_pins[] = { 217 { 32, 0 }, 218 { 33, 0 }, 219 { 34, 0 }, 220 { 43, 0 }, 221 { 44, 0 }, 222 { 45, 0 }, 223 { 56, 1 }, 224}; 225 226static const struct bcm4908_pinctrl_pin_setup nand_data_pins[] = { 227 { 35, 0 }, 228 { 36, 0 }, 229 { 37, 0 }, 230 { 38, 0 }, 231 { 39, 0 }, 232 { 40, 0 }, 233 { 41, 0 }, 234 { 42, 0 }, 235}; 236 237static const struct bcm4908_pinctrl_pin_setup emmc_ctrl_pins[] = { 238 { 46, 0 }, 239 { 47, 0 }, 240}; 241 242static const struct bcm4908_pinctrl_pin_setup usb0_pwr_pins[] = { 243 { 63, 0 }, 244 { 64, 0 }, 245}; 246 247static const struct bcm4908_pinctrl_pin_setup usb1_pwr_pins[] = { 248 { 66, 0 }, 249 { 67, 0 }, 250}; 251 252struct bcm4908_pinctrl_grp { 253 const char *name; 254 const struct bcm4908_pinctrl_pin_setup *pins; 255 const unsigned int num_pins; 256}; 257 258static const struct bcm4908_pinctrl_grp bcm4908_pinctrl_grps[] = { 259 { "led_0_grp_a", led_0_pins_a, ARRAY_SIZE(led_0_pins_a) }, 260 { "led_1_grp_a", led_1_pins_a, ARRAY_SIZE(led_1_pins_a) }, 261 { "led_2_grp_a", led_2_pins_a, ARRAY_SIZE(led_2_pins_a) }, 262 { "led_3_grp_a", led_3_pins_a, ARRAY_SIZE(led_3_pins_a) }, 263 { "led_4_grp_a", led_4_pins_a, ARRAY_SIZE(led_4_pins_a) }, 264 { "led_5_grp_a", led_5_pins_a, ARRAY_SIZE(led_5_pins_a) }, 265 { "led_6_grp_a", led_6_pins_a, ARRAY_SIZE(led_6_pins_a) }, 266 { "led_7_grp_a", led_7_pins_a, ARRAY_SIZE(led_7_pins_a) }, 267 { "led_8_grp_a", led_8_pins_a, ARRAY_SIZE(led_8_pins_a) }, 268 { "led_9_grp_a", led_9_pins_a, ARRAY_SIZE(led_9_pins_a) }, 269 { "led_10_grp_a", led_10_pins_a, ARRAY_SIZE(led_10_pins_a) }, 270 { "led_11_grp_a", led_11_pins_a, ARRAY_SIZE(led_11_pins_a) }, 271 { "led_12_grp_a", led_12_pins_a, ARRAY_SIZE(led_12_pins_a) }, 272 { "led_13_grp_a", led_13_pins_a, ARRAY_SIZE(led_13_pins_a) }, 273 { "led_14_grp_a", led_14_pins_a, ARRAY_SIZE(led_14_pins_a) }, 274 { "led_15_grp_a", led_15_pins_a, ARRAY_SIZE(led_15_pins_a) }, 275 { "led_16_grp_a", led_16_pins_a, ARRAY_SIZE(led_16_pins_a) }, 276 { "led_17_grp_a", led_17_pins_a, ARRAY_SIZE(led_17_pins_a) }, 277 { "led_18_grp_a", led_18_pins_a, ARRAY_SIZE(led_18_pins_a) }, 278 { "led_19_grp_a", led_19_pins_a, ARRAY_SIZE(led_19_pins_a) }, 279 { "led_20_grp_a", led_20_pins_a, ARRAY_SIZE(led_20_pins_a) }, 280 { "led_21_grp_a", led_21_pins_a, ARRAY_SIZE(led_21_pins_a) }, 281 { "led_22_grp_a", led_22_pins_a, ARRAY_SIZE(led_22_pins_a) }, 282 { "led_23_grp_a", led_23_pins_a, ARRAY_SIZE(led_23_pins_a) }, 283 { "led_24_grp_a", led_24_pins_a, ARRAY_SIZE(led_24_pins_a) }, 284 { "led_25_grp_a", led_25_pins_a, ARRAY_SIZE(led_25_pins_a) }, 285 { "led_26_grp_a", led_26_pins_a, ARRAY_SIZE(led_26_pins_a) }, 286 { "led_27_grp_a", led_27_pins_a, ARRAY_SIZE(led_27_pins_a) }, 287 { "led_28_grp_a", led_28_pins_a, ARRAY_SIZE(led_28_pins_a) }, 288 { "led_29_grp_a", led_29_pins_a, ARRAY_SIZE(led_29_pins_a) }, 289 { "led_30_grp_a", led_30_pins_a, ARRAY_SIZE(led_30_pins_a) }, 290 { "led_31_grp_a", led_31_pins_a, ARRAY_SIZE(led_31_pins_a) }, 291 { "led_10_grp_b", led_10_pins_b, ARRAY_SIZE(led_10_pins_b) }, 292 { "led_11_grp_b", led_11_pins_b, ARRAY_SIZE(led_11_pins_b) }, 293 { "led_12_grp_b", led_12_pins_b, ARRAY_SIZE(led_12_pins_b) }, 294 { "led_13_grp_b", led_13_pins_b, ARRAY_SIZE(led_13_pins_b) }, 295 { "led_31_grp_b", led_31_pins_b, ARRAY_SIZE(led_31_pins_b) }, 296 { "hs_uart_grp", hs_uart_pins, ARRAY_SIZE(hs_uart_pins) }, 297 { "i2c_grp_a", i2c_pins_a, ARRAY_SIZE(i2c_pins_a) }, 298 { "i2c_grp_b", i2c_pins_b, ARRAY_SIZE(i2c_pins_b) }, 299 { "i2s_grp", i2s_pins, ARRAY_SIZE(i2s_pins) }, 300 { "nand_ctrl_grp", nand_ctrl_pins, ARRAY_SIZE(nand_ctrl_pins) }, 301 { "nand_data_grp", nand_data_pins, ARRAY_SIZE(nand_data_pins) }, 302 { "emmc_ctrl_grp", emmc_ctrl_pins, ARRAY_SIZE(emmc_ctrl_pins) }, 303 { "usb0_pwr_grp", usb0_pwr_pins, ARRAY_SIZE(usb0_pwr_pins) }, 304 { "usb1_pwr_grp", usb1_pwr_pins, ARRAY_SIZE(usb1_pwr_pins) }, 305}; 306 307/* 308 * Functions 309 */ 310 311struct bcm4908_pinctrl_function { 312 const char *name; 313 const char * const *groups; 314 const unsigned int num_groups; 315}; 316 317static const char * const led_0_groups[] = { "led_0_grp_a" }; 318static const char * const led_1_groups[] = { "led_1_grp_a" }; 319static const char * const led_2_groups[] = { "led_2_grp_a" }; 320static const char * const led_3_groups[] = { "led_3_grp_a" }; 321static const char * const led_4_groups[] = { "led_4_grp_a" }; 322static const char * const led_5_groups[] = { "led_5_grp_a" }; 323static const char * const led_6_groups[] = { "led_6_grp_a" }; 324static const char * const led_7_groups[] = { "led_7_grp_a" }; 325static const char * const led_8_groups[] = { "led_8_grp_a" }; 326static const char * const led_9_groups[] = { "led_9_grp_a" }; 327static const char * const led_10_groups[] = { "led_10_grp_a", "led_10_grp_b" }; 328static const char * const led_11_groups[] = { "led_11_grp_a", "led_11_grp_b" }; 329static const char * const led_12_groups[] = { "led_12_grp_a", "led_12_grp_b" }; 330static const char * const led_13_groups[] = { "led_13_grp_a", "led_13_grp_b" }; 331static const char * const led_14_groups[] = { "led_14_grp_a" }; 332static const char * const led_15_groups[] = { "led_15_grp_a" }; 333static const char * const led_16_groups[] = { "led_16_grp_a" }; 334static const char * const led_17_groups[] = { "led_17_grp_a" }; 335static const char * const led_18_groups[] = { "led_18_grp_a" }; 336static const char * const led_19_groups[] = { "led_19_grp_a" }; 337static const char * const led_20_groups[] = { "led_20_grp_a" }; 338static const char * const led_21_groups[] = { "led_21_grp_a" }; 339static const char * const led_22_groups[] = { "led_22_grp_a" }; 340static const char * const led_23_groups[] = { "led_23_grp_a" }; 341static const char * const led_24_groups[] = { "led_24_grp_a" }; 342static const char * const led_25_groups[] = { "led_25_grp_a" }; 343static const char * const led_26_groups[] = { "led_26_grp_a" }; 344static const char * const led_27_groups[] = { "led_27_grp_a" }; 345static const char * const led_28_groups[] = { "led_28_grp_a" }; 346static const char * const led_29_groups[] = { "led_29_grp_a" }; 347static const char * const led_30_groups[] = { "led_30_grp_a" }; 348static const char * const led_31_groups[] = { "led_31_grp_a", "led_31_grp_b" }; 349static const char * const hs_uart_groups[] = { "hs_uart_grp" }; 350static const char * const i2c_groups[] = { "i2c_grp_a", "i2c_grp_b" }; 351static const char * const i2s_groups[] = { "i2s_grp" }; 352static const char * const nand_ctrl_groups[] = { "nand_ctrl_grp" }; 353static const char * const nand_data_groups[] = { "nand_data_grp" }; 354static const char * const emmc_ctrl_groups[] = { "emmc_ctrl_grp" }; 355static const char * const usb0_pwr_groups[] = { "usb0_pwr_grp" }; 356static const char * const usb1_pwr_groups[] = { "usb1_pwr_grp" }; 357 358static const struct bcm4908_pinctrl_function bcm4908_pinctrl_functions[] = { 359 { "led_0", led_0_groups, ARRAY_SIZE(led_0_groups) }, 360 { "led_1", led_1_groups, ARRAY_SIZE(led_1_groups) }, 361 { "led_2", led_2_groups, ARRAY_SIZE(led_2_groups) }, 362 { "led_3", led_3_groups, ARRAY_SIZE(led_3_groups) }, 363 { "led_4", led_4_groups, ARRAY_SIZE(led_4_groups) }, 364 { "led_5", led_5_groups, ARRAY_SIZE(led_5_groups) }, 365 { "led_6", led_6_groups, ARRAY_SIZE(led_6_groups) }, 366 { "led_7", led_7_groups, ARRAY_SIZE(led_7_groups) }, 367 { "led_8", led_8_groups, ARRAY_SIZE(led_8_groups) }, 368 { "led_9", led_9_groups, ARRAY_SIZE(led_9_groups) }, 369 { "led_10", led_10_groups, ARRAY_SIZE(led_10_groups) }, 370 { "led_11", led_11_groups, ARRAY_SIZE(led_11_groups) }, 371 { "led_12", led_12_groups, ARRAY_SIZE(led_12_groups) }, 372 { "led_13", led_13_groups, ARRAY_SIZE(led_13_groups) }, 373 { "led_14", led_14_groups, ARRAY_SIZE(led_14_groups) }, 374 { "led_15", led_15_groups, ARRAY_SIZE(led_15_groups) }, 375 { "led_16", led_16_groups, ARRAY_SIZE(led_16_groups) }, 376 { "led_17", led_17_groups, ARRAY_SIZE(led_17_groups) }, 377 { "led_18", led_18_groups, ARRAY_SIZE(led_18_groups) }, 378 { "led_19", led_19_groups, ARRAY_SIZE(led_19_groups) }, 379 { "led_20", led_20_groups, ARRAY_SIZE(led_20_groups) }, 380 { "led_21", led_21_groups, ARRAY_SIZE(led_21_groups) }, 381 { "led_22", led_22_groups, ARRAY_SIZE(led_22_groups) }, 382 { "led_23", led_23_groups, ARRAY_SIZE(led_23_groups) }, 383 { "led_24", led_24_groups, ARRAY_SIZE(led_24_groups) }, 384 { "led_25", led_25_groups, ARRAY_SIZE(led_25_groups) }, 385 { "led_26", led_26_groups, ARRAY_SIZE(led_26_groups) }, 386 { "led_27", led_27_groups, ARRAY_SIZE(led_27_groups) }, 387 { "led_28", led_28_groups, ARRAY_SIZE(led_28_groups) }, 388 { "led_29", led_29_groups, ARRAY_SIZE(led_29_groups) }, 389 { "led_30", led_30_groups, ARRAY_SIZE(led_30_groups) }, 390 { "led_31", led_31_groups, ARRAY_SIZE(led_31_groups) }, 391 { "hs_uart", hs_uart_groups, ARRAY_SIZE(hs_uart_groups) }, 392 { "i2c", i2c_groups, ARRAY_SIZE(i2c_groups) }, 393 { "i2s", i2s_groups, ARRAY_SIZE(i2s_groups) }, 394 { "nand_ctrl", nand_ctrl_groups, ARRAY_SIZE(nand_ctrl_groups) }, 395 { "nand_data", nand_data_groups, ARRAY_SIZE(nand_data_groups) }, 396 { "emmc_ctrl", emmc_ctrl_groups, ARRAY_SIZE(emmc_ctrl_groups) }, 397 { "usb0_pwr", usb0_pwr_groups, ARRAY_SIZE(usb0_pwr_groups) }, 398 { "usb1_pwr", usb1_pwr_groups, ARRAY_SIZE(usb1_pwr_groups) }, 399}; 400 401/* 402 * Groups code 403 */ 404 405static const struct pinctrl_ops bcm4908_pinctrl_ops = { 406 .get_groups_count = pinctrl_generic_get_group_count, 407 .get_group_name = pinctrl_generic_get_group_name, 408 .get_group_pins = pinctrl_generic_get_group_pins, 409 .dt_node_to_map = pinconf_generic_dt_node_to_map_group, 410 .dt_free_map = pinconf_generic_dt_free_map, 411}; 412 413/* 414 * Functions code 415 */ 416 417static int bcm4908_pinctrl_set_mux(struct pinctrl_dev *pctrl_dev, 418 unsigned int func_selector, 419 unsigned int group_selector) 420{ 421 struct bcm4908_pinctrl *bcm4908_pinctrl = pinctrl_dev_get_drvdata(pctrl_dev); 422 const struct bcm4908_pinctrl_grp *group; 423 struct group_desc *group_desc; 424 int i; 425 426 group_desc = pinctrl_generic_get_group(pctrl_dev, group_selector); 427 if (!group_desc) 428 return -EINVAL; 429 group = group_desc->data; 430 431 mutex_lock(&bcm4908_pinctrl->mutex); 432 for (i = 0; i < group->num_pins; i++) { 433 u32 lsb = 0; 434 435 lsb |= group->pins[i].number; 436 lsb |= group->pins[i].function << BCM4908_TEST_PORT_LSB_PINMUX_DATA_SHIFT; 437 438 writel(0x0, bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_MSB); 439 writel(lsb, bcm4908_pinctrl->base + BCM4908_TEST_PORT_BLOCK_DATA_LSB); 440 writel(BCM4908_TEST_PORT_CMD_LOAD_MUX_REG, 441 bcm4908_pinctrl->base + BCM4908_TEST_PORT_COMMAND); 442 } 443 mutex_unlock(&bcm4908_pinctrl->mutex); 444 445 return 0; 446} 447 448static const struct pinmux_ops bcm4908_pinctrl_pmxops = { 449 .get_functions_count = pinmux_generic_get_function_count, 450 .get_function_name = pinmux_generic_get_function_name, 451 .get_function_groups = pinmux_generic_get_function_groups, 452 .set_mux = bcm4908_pinctrl_set_mux, 453}; 454 455/* 456 * Controller code 457 */ 458 459static struct pinctrl_desc bcm4908_pinctrl_desc = { 460 .name = "bcm4908-pinctrl", 461 .pctlops = &bcm4908_pinctrl_ops, 462 .pmxops = &bcm4908_pinctrl_pmxops, 463}; 464 465static const struct of_device_id bcm4908_pinctrl_of_match_table[] = { 466 { .compatible = "brcm,bcm4908-pinctrl", }, 467 { } 468}; 469 470static int bcm4908_pinctrl_probe(struct platform_device *pdev) 471{ 472 struct device *dev = &pdev->dev; 473 struct bcm4908_pinctrl *bcm4908_pinctrl; 474 struct pinctrl_desc *pctldesc; 475 struct pinctrl_pin_desc *pins; 476 char **pin_names; 477 int i; 478 479 bcm4908_pinctrl = devm_kzalloc(dev, sizeof(*bcm4908_pinctrl), GFP_KERNEL); 480 if (!bcm4908_pinctrl) 481 return -ENOMEM; 482 pctldesc = &bcm4908_pinctrl->pctldesc; 483 platform_set_drvdata(pdev, bcm4908_pinctrl); 484 485 /* Set basic properties */ 486 487 bcm4908_pinctrl->dev = dev; 488 489 bcm4908_pinctrl->base = devm_platform_ioremap_resource(pdev, 0); 490 if (IS_ERR(bcm4908_pinctrl->base)) 491 return PTR_ERR(bcm4908_pinctrl->base); 492 493 mutex_init(&bcm4908_pinctrl->mutex); 494 495 memcpy(pctldesc, &bcm4908_pinctrl_desc, sizeof(*pctldesc)); 496 497 /* Set pinctrl properties */ 498 499 pin_names = devm_kasprintf_strarray(dev, "pin", BCM4908_NUM_PINS); 500 if (IS_ERR(pin_names)) 501 return PTR_ERR(pin_names); 502 503 pins = devm_kcalloc(dev, BCM4908_NUM_PINS, sizeof(*pins), GFP_KERNEL); 504 if (!pins) 505 return -ENOMEM; 506 for (i = 0; i < BCM4908_NUM_PINS; i++) { 507 pins[i].number = i; 508 pins[i].name = pin_names[i]; 509 } 510 pctldesc->pins = pins; 511 pctldesc->npins = BCM4908_NUM_PINS; 512 513 /* Register */ 514 515 bcm4908_pinctrl->pctldev = devm_pinctrl_register(dev, pctldesc, bcm4908_pinctrl); 516 if (IS_ERR(bcm4908_pinctrl->pctldev)) 517 return dev_err_probe(dev, PTR_ERR(bcm4908_pinctrl->pctldev), 518 "Failed to register pinctrl\n"); 519 520 /* Groups */ 521 522 for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_grps); i++) { 523 const struct bcm4908_pinctrl_grp *group = &bcm4908_pinctrl_grps[i]; 524 int *pins; 525 int j; 526 527 pins = devm_kcalloc(dev, group->num_pins, sizeof(*pins), GFP_KERNEL); 528 if (!pins) 529 return -ENOMEM; 530 for (j = 0; j < group->num_pins; j++) 531 pins[j] = group->pins[j].number; 532 533 pinctrl_generic_add_group(bcm4908_pinctrl->pctldev, group->name, 534 pins, group->num_pins, (void *)group); 535 } 536 537 /* Functions */ 538 539 for (i = 0; i < ARRAY_SIZE(bcm4908_pinctrl_functions); i++) { 540 const struct bcm4908_pinctrl_function *function = &bcm4908_pinctrl_functions[i]; 541 542 pinmux_generic_add_function(bcm4908_pinctrl->pctldev, 543 function->name, 544 function->groups, 545 function->num_groups, NULL); 546 } 547 548 return 0; 549} 550 551static struct platform_driver bcm4908_pinctrl_driver = { 552 .probe = bcm4908_pinctrl_probe, 553 .driver = { 554 .name = "bcm4908-pinctrl", 555 .of_match_table = bcm4908_pinctrl_of_match_table, 556 }, 557}; 558 559module_platform_driver(bcm4908_pinctrl_driver); 560 561MODULE_AUTHOR("Rafał Miłecki"); 562MODULE_LICENSE("GPL v2"); 563MODULE_DEVICE_TABLE(of, bcm4908_pinctrl_of_match_table); 564