1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2015, Sony Mobile Communications AB. 4 * Copyright (c) 2013, The Linux Foundation. All rights reserved. 5 */ 6 7 #include <linux/module.h> 8 #include <linux/platform_device.h> 9 #include <linux/pinctrl/pinctrl.h> 10 #include <linux/pinctrl/pinmux.h> 11 #include <linux/pinctrl/pinconf.h> 12 #include <linux/pinctrl/pinconf-generic.h> 13 #include <linux/slab.h> 14 #include <linux/regmap.h> 15 #include <linux/gpio/driver.h> 16 #include <linux/interrupt.h> 17 #include <linux/of_device.h> 18 #include <linux/of_irq.h> 19 20 #include <dt-bindings/pinctrl/qcom,pmic-mpp.h> 21 22 #include "../core.h" 23 #include "../pinctrl-utils.h" 24 25 /* MPP registers */ 26 #define SSBI_REG_ADDR_MPP_BASE 0x50 27 #define SSBI_REG_ADDR_MPP(n) (SSBI_REG_ADDR_MPP_BASE + n) 28 29 /* MPP Type: type */ 30 #define PM8XXX_MPP_TYPE_D_INPUT 0 31 #define PM8XXX_MPP_TYPE_D_OUTPUT 1 32 #define PM8XXX_MPP_TYPE_D_BI_DIR 2 33 #define PM8XXX_MPP_TYPE_A_INPUT 3 34 #define PM8XXX_MPP_TYPE_A_OUTPUT 4 35 #define PM8XXX_MPP_TYPE_SINK 5 36 #define PM8XXX_MPP_TYPE_DTEST_SINK 6 37 #define PM8XXX_MPP_TYPE_DTEST_OUTPUT 7 38 39 /* Digital Input: control */ 40 #define PM8XXX_MPP_DIN_TO_INT 0 41 #define PM8XXX_MPP_DIN_TO_DBUS1 1 42 #define PM8XXX_MPP_DIN_TO_DBUS2 2 43 #define PM8XXX_MPP_DIN_TO_DBUS3 3 44 45 /* Digital Output: control */ 46 #define PM8XXX_MPP_DOUT_CTRL_LOW 0 47 #define PM8XXX_MPP_DOUT_CTRL_HIGH 1 48 #define PM8XXX_MPP_DOUT_CTRL_MPP 2 49 #define PM8XXX_MPP_DOUT_CTRL_INV_MPP 3 50 51 /* Bidirectional: control */ 52 #define PM8XXX_MPP_BI_PULLUP_1KOHM 0 53 #define PM8XXX_MPP_BI_PULLUP_OPEN 1 54 #define PM8XXX_MPP_BI_PULLUP_10KOHM 2 55 #define PM8XXX_MPP_BI_PULLUP_30KOHM 3 56 57 /* Analog Output: control */ 58 #define PM8XXX_MPP_AOUT_CTRL_DISABLE 0 59 #define PM8XXX_MPP_AOUT_CTRL_ENABLE 1 60 #define PM8XXX_MPP_AOUT_CTRL_MPP_HIGH_EN 2 61 #define PM8XXX_MPP_AOUT_CTRL_MPP_LOW_EN 3 62 63 /* Current Sink: control */ 64 #define PM8XXX_MPP_CS_CTRL_DISABLE 0 65 #define PM8XXX_MPP_CS_CTRL_ENABLE 1 66 #define PM8XXX_MPP_CS_CTRL_MPP_HIGH_EN 2 67 #define PM8XXX_MPP_CS_CTRL_MPP_LOW_EN 3 68 69 /* DTEST Current Sink: control */ 70 #define PM8XXX_MPP_DTEST_CS_CTRL_EN1 0 71 #define PM8XXX_MPP_DTEST_CS_CTRL_EN2 1 72 #define PM8XXX_MPP_DTEST_CS_CTRL_EN3 2 73 #define PM8XXX_MPP_DTEST_CS_CTRL_EN4 3 74 75 /* DTEST Digital Output: control */ 76 #define PM8XXX_MPP_DTEST_DBUS1 0 77 #define PM8XXX_MPP_DTEST_DBUS2 1 78 #define PM8XXX_MPP_DTEST_DBUS3 2 79 #define PM8XXX_MPP_DTEST_DBUS4 3 80 81 /* custom pinconf parameters */ 82 #define PM8XXX_CONFIG_AMUX (PIN_CONFIG_END + 1) 83 #define PM8XXX_CONFIG_DTEST_SELECTOR (PIN_CONFIG_END + 2) 84 #define PM8XXX_CONFIG_ALEVEL (PIN_CONFIG_END + 3) 85 #define PM8XXX_CONFIG_PAIRED (PIN_CONFIG_END + 4) 86 87 /** 88 * struct pm8xxx_pin_data - dynamic configuration for a pin 89 * @reg: address of the control register 90 * @mode: operating mode for the pin (digital, analog or current sink) 91 * @input: pin is input 92 * @output: pin is output 93 * @high_z: pin is floating 94 * @paired: mpp operates in paired mode 95 * @output_value: logical output value of the mpp 96 * @power_source: selected power source 97 * @dtest: DTEST route selector 98 * @amux: input muxing in analog mode 99 * @aout_level: selector of the output in analog mode 100 * @drive_strength: drive strength of the current sink 101 * @pullup: pull up value, when in digital bidirectional mode 102 */ 103 struct pm8xxx_pin_data { 104 unsigned reg; 105 106 u8 mode; 107 108 bool input; 109 bool output; 110 bool high_z; 111 bool paired; 112 bool output_value; 113 114 u8 power_source; 115 u8 dtest; 116 u8 amux; 117 u8 aout_level; 118 u8 drive_strength; 119 unsigned pullup; 120 }; 121 122 struct pm8xxx_mpp { 123 struct device *dev; 124 struct regmap *regmap; 125 struct pinctrl_dev *pctrl; 126 struct gpio_chip chip; 127 struct irq_chip irq; 128 129 struct pinctrl_desc desc; 130 unsigned npins; 131 }; 132 133 static const struct pinconf_generic_params pm8xxx_mpp_bindings[] = { 134 {"qcom,amux-route", PM8XXX_CONFIG_AMUX, 0}, 135 {"qcom,analog-level", PM8XXX_CONFIG_ALEVEL, 0}, 136 {"qcom,dtest", PM8XXX_CONFIG_DTEST_SELECTOR, 0}, 137 {"qcom,paired", PM8XXX_CONFIG_PAIRED, 0}, 138 }; 139 140 #ifdef CONFIG_DEBUG_FS 141 static const struct pin_config_item pm8xxx_conf_items[] = { 142 PCONFDUMP(PM8XXX_CONFIG_AMUX, "analog mux", NULL, true), 143 PCONFDUMP(PM8XXX_CONFIG_ALEVEL, "analog level", NULL, true), 144 PCONFDUMP(PM8XXX_CONFIG_DTEST_SELECTOR, "dtest", NULL, true), 145 PCONFDUMP(PM8XXX_CONFIG_PAIRED, "paired", NULL, false), 146 }; 147 #endif 148 149 #define PM8XXX_MAX_MPPS 12 150 #define PM8XXX_MPP_PHYSICAL_OFFSET 1 151 152 static const char * const pm8xxx_groups[PM8XXX_MAX_MPPS] = { 153 "mpp1", "mpp2", "mpp3", "mpp4", "mpp5", "mpp6", "mpp7", "mpp8", 154 "mpp9", "mpp10", "mpp11", "mpp12", 155 }; 156 157 #define PM8XXX_MPP_DIGITAL 0 158 #define PM8XXX_MPP_ANALOG 1 159 #define PM8XXX_MPP_SINK 2 160 161 static const char * const pm8xxx_mpp_functions[] = { 162 "digital", "analog", "sink", 163 }; 164 165 static int pm8xxx_mpp_update(struct pm8xxx_mpp *pctrl, 166 struct pm8xxx_pin_data *pin) 167 { 168 unsigned level; 169 unsigned ctrl; 170 unsigned type; 171 int ret; 172 u8 val; 173 174 switch (pin->mode) { 175 case PM8XXX_MPP_DIGITAL: 176 if (pin->dtest) { 177 type = PM8XXX_MPP_TYPE_DTEST_OUTPUT; 178 ctrl = pin->dtest - 1; 179 } else if (pin->input && pin->output) { 180 type = PM8XXX_MPP_TYPE_D_BI_DIR; 181 if (pin->high_z) 182 ctrl = PM8XXX_MPP_BI_PULLUP_OPEN; 183 else if (pin->pullup == 600) 184 ctrl = PM8XXX_MPP_BI_PULLUP_1KOHM; 185 else if (pin->pullup == 10000) 186 ctrl = PM8XXX_MPP_BI_PULLUP_10KOHM; 187 else 188 ctrl = PM8XXX_MPP_BI_PULLUP_30KOHM; 189 } else if (pin->input) { 190 type = PM8XXX_MPP_TYPE_D_INPUT; 191 if (pin->dtest) 192 ctrl = pin->dtest; 193 else 194 ctrl = PM8XXX_MPP_DIN_TO_INT; 195 } else { 196 type = PM8XXX_MPP_TYPE_D_OUTPUT; 197 ctrl = !!pin->output_value; 198 if (pin->paired) 199 ctrl |= BIT(1); 200 } 201 202 level = pin->power_source; 203 break; 204 case PM8XXX_MPP_ANALOG: 205 if (pin->output) { 206 type = PM8XXX_MPP_TYPE_A_OUTPUT; 207 level = pin->aout_level; 208 ctrl = pin->output_value; 209 if (pin->paired) 210 ctrl |= BIT(1); 211 } else { 212 type = PM8XXX_MPP_TYPE_A_INPUT; 213 level = pin->amux; 214 ctrl = 0; 215 } 216 break; 217 case PM8XXX_MPP_SINK: 218 level = (pin->drive_strength / 5) - 1; 219 if (pin->dtest) { 220 type = PM8XXX_MPP_TYPE_DTEST_SINK; 221 ctrl = pin->dtest - 1; 222 } else { 223 type = PM8XXX_MPP_TYPE_SINK; 224 ctrl = pin->output_value; 225 if (pin->paired) 226 ctrl |= BIT(1); 227 } 228 break; 229 default: 230 return -EINVAL; 231 } 232 233 val = type << 5 | level << 2 | ctrl; 234 ret = regmap_write(pctrl->regmap, pin->reg, val); 235 if (ret) 236 dev_err(pctrl->dev, "failed to write register\n"); 237 238 return ret; 239 } 240 241 static int pm8xxx_get_groups_count(struct pinctrl_dev *pctldev) 242 { 243 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev); 244 245 return pctrl->npins; 246 } 247 248 static const char *pm8xxx_get_group_name(struct pinctrl_dev *pctldev, 249 unsigned group) 250 { 251 return pm8xxx_groups[group]; 252 } 253 254 255 static int pm8xxx_get_group_pins(struct pinctrl_dev *pctldev, 256 unsigned group, 257 const unsigned **pins, 258 unsigned *num_pins) 259 { 260 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev); 261 262 *pins = &pctrl->desc.pins[group].number; 263 *num_pins = 1; 264 265 return 0; 266 } 267 268 static const struct pinctrl_ops pm8xxx_pinctrl_ops = { 269 .get_groups_count = pm8xxx_get_groups_count, 270 .get_group_name = pm8xxx_get_group_name, 271 .get_group_pins = pm8xxx_get_group_pins, 272 .dt_node_to_map = pinconf_generic_dt_node_to_map_group, 273 .dt_free_map = pinctrl_utils_free_map, 274 }; 275 276 static int pm8xxx_get_functions_count(struct pinctrl_dev *pctldev) 277 { 278 return ARRAY_SIZE(pm8xxx_mpp_functions); 279 } 280 281 static const char *pm8xxx_get_function_name(struct pinctrl_dev *pctldev, 282 unsigned function) 283 { 284 return pm8xxx_mpp_functions[function]; 285 } 286 287 static int pm8xxx_get_function_groups(struct pinctrl_dev *pctldev, 288 unsigned function, 289 const char * const **groups, 290 unsigned * const num_groups) 291 { 292 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev); 293 294 *groups = pm8xxx_groups; 295 *num_groups = pctrl->npins; 296 return 0; 297 } 298 299 static int pm8xxx_pinmux_set_mux(struct pinctrl_dev *pctldev, 300 unsigned function, 301 unsigned group) 302 { 303 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev); 304 struct pm8xxx_pin_data *pin = pctrl->desc.pins[group].drv_data; 305 306 pin->mode = function; 307 pm8xxx_mpp_update(pctrl, pin); 308 309 return 0; 310 } 311 312 static const struct pinmux_ops pm8xxx_pinmux_ops = { 313 .get_functions_count = pm8xxx_get_functions_count, 314 .get_function_name = pm8xxx_get_function_name, 315 .get_function_groups = pm8xxx_get_function_groups, 316 .set_mux = pm8xxx_pinmux_set_mux, 317 }; 318 319 static int pm8xxx_pin_config_get(struct pinctrl_dev *pctldev, 320 unsigned int offset, 321 unsigned long *config) 322 { 323 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev); 324 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; 325 unsigned param = pinconf_to_config_param(*config); 326 unsigned arg; 327 328 switch (param) { 329 case PIN_CONFIG_BIAS_PULL_UP: 330 arg = pin->pullup; 331 break; 332 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: 333 arg = pin->high_z; 334 break; 335 case PIN_CONFIG_INPUT_ENABLE: 336 arg = pin->input; 337 break; 338 case PIN_CONFIG_OUTPUT: 339 arg = pin->output_value; 340 break; 341 case PIN_CONFIG_POWER_SOURCE: 342 arg = pin->power_source; 343 break; 344 case PIN_CONFIG_DRIVE_STRENGTH: 345 arg = pin->drive_strength; 346 break; 347 case PM8XXX_CONFIG_DTEST_SELECTOR: 348 arg = pin->dtest; 349 break; 350 case PM8XXX_CONFIG_AMUX: 351 arg = pin->amux; 352 break; 353 case PM8XXX_CONFIG_ALEVEL: 354 arg = pin->aout_level; 355 break; 356 case PM8XXX_CONFIG_PAIRED: 357 arg = pin->paired; 358 break; 359 default: 360 return -EINVAL; 361 } 362 363 *config = pinconf_to_config_packed(param, arg); 364 365 return 0; 366 } 367 368 static int pm8xxx_pin_config_set(struct pinctrl_dev *pctldev, 369 unsigned int offset, 370 unsigned long *configs, 371 unsigned num_configs) 372 { 373 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev); 374 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; 375 unsigned param; 376 unsigned arg; 377 unsigned i; 378 379 for (i = 0; i < num_configs; i++) { 380 param = pinconf_to_config_param(configs[i]); 381 arg = pinconf_to_config_argument(configs[i]); 382 383 switch (param) { 384 case PIN_CONFIG_BIAS_PULL_UP: 385 pin->pullup = arg; 386 break; 387 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: 388 pin->high_z = true; 389 break; 390 case PIN_CONFIG_INPUT_ENABLE: 391 pin->input = true; 392 break; 393 case PIN_CONFIG_OUTPUT: 394 pin->output = true; 395 pin->output_value = !!arg; 396 break; 397 case PIN_CONFIG_POWER_SOURCE: 398 pin->power_source = arg; 399 break; 400 case PIN_CONFIG_DRIVE_STRENGTH: 401 pin->drive_strength = arg; 402 break; 403 case PM8XXX_CONFIG_DTEST_SELECTOR: 404 pin->dtest = arg; 405 break; 406 case PM8XXX_CONFIG_AMUX: 407 pin->amux = arg; 408 break; 409 case PM8XXX_CONFIG_ALEVEL: 410 pin->aout_level = arg; 411 break; 412 case PM8XXX_CONFIG_PAIRED: 413 pin->paired = !!arg; 414 break; 415 default: 416 dev_err(pctrl->dev, 417 "unsupported config parameter: %x\n", 418 param); 419 return -EINVAL; 420 } 421 } 422 423 pm8xxx_mpp_update(pctrl, pin); 424 425 return 0; 426 } 427 428 static const struct pinconf_ops pm8xxx_pinconf_ops = { 429 .is_generic = true, 430 .pin_config_group_get = pm8xxx_pin_config_get, 431 .pin_config_group_set = pm8xxx_pin_config_set, 432 }; 433 434 static const struct pinctrl_desc pm8xxx_pinctrl_desc = { 435 .name = "pm8xxx_mpp", 436 .pctlops = &pm8xxx_pinctrl_ops, 437 .pmxops = &pm8xxx_pinmux_ops, 438 .confops = &pm8xxx_pinconf_ops, 439 .owner = THIS_MODULE, 440 }; 441 442 static int pm8xxx_mpp_direction_input(struct gpio_chip *chip, 443 unsigned offset) 444 { 445 struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip); 446 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; 447 448 switch (pin->mode) { 449 case PM8XXX_MPP_DIGITAL: 450 pin->input = true; 451 break; 452 case PM8XXX_MPP_ANALOG: 453 pin->input = true; 454 pin->output = true; 455 break; 456 case PM8XXX_MPP_SINK: 457 return -EINVAL; 458 } 459 460 pm8xxx_mpp_update(pctrl, pin); 461 462 return 0; 463 } 464 465 static int pm8xxx_mpp_direction_output(struct gpio_chip *chip, 466 unsigned offset, 467 int value) 468 { 469 struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip); 470 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; 471 472 switch (pin->mode) { 473 case PM8XXX_MPP_DIGITAL: 474 pin->output = true; 475 break; 476 case PM8XXX_MPP_ANALOG: 477 pin->input = false; 478 pin->output = true; 479 break; 480 case PM8XXX_MPP_SINK: 481 pin->input = false; 482 pin->output = true; 483 break; 484 } 485 486 pm8xxx_mpp_update(pctrl, pin); 487 488 return 0; 489 } 490 491 static int pm8xxx_mpp_get(struct gpio_chip *chip, unsigned offset) 492 { 493 struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip); 494 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; 495 bool state; 496 int ret, irq; 497 498 if (!pin->input) 499 return !!pin->output_value; 500 501 irq = chip->to_irq(chip, offset); 502 if (irq < 0) 503 return irq; 504 505 ret = irq_get_irqchip_state(irq, IRQCHIP_STATE_LINE_LEVEL, &state); 506 if (!ret) 507 ret = !!state; 508 509 return ret; 510 } 511 512 static void pm8xxx_mpp_set(struct gpio_chip *chip, unsigned offset, int value) 513 { 514 struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip); 515 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; 516 517 pin->output_value = !!value; 518 519 pm8xxx_mpp_update(pctrl, pin); 520 } 521 522 static int pm8xxx_mpp_of_xlate(struct gpio_chip *chip, 523 const struct of_phandle_args *gpio_desc, 524 u32 *flags) 525 { 526 if (chip->of_gpio_n_cells < 2) 527 return -EINVAL; 528 529 if (flags) 530 *flags = gpio_desc->args[1]; 531 532 return gpio_desc->args[0] - PM8XXX_MPP_PHYSICAL_OFFSET; 533 } 534 535 536 #ifdef CONFIG_DEBUG_FS 537 #include <linux/seq_file.h> 538 539 static void pm8xxx_mpp_dbg_show_one(struct seq_file *s, 540 struct pinctrl_dev *pctldev, 541 struct gpio_chip *chip, 542 unsigned offset, 543 unsigned gpio) 544 { 545 struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip); 546 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data; 547 548 static const char * const aout_lvls[] = { 549 "1v25", "1v25_2", "0v625", "0v3125", "mpp", "abus1", "abus2", 550 "abus3" 551 }; 552 553 static const char * const amuxs[] = { 554 "amux5", "amux6", "amux7", "amux8", "amux9", "abus1", "abus2", 555 "abus3", 556 }; 557 558 seq_printf(s, " mpp%-2d:", offset + PM8XXX_MPP_PHYSICAL_OFFSET); 559 560 switch (pin->mode) { 561 case PM8XXX_MPP_DIGITAL: 562 seq_puts(s, " digital "); 563 if (pin->dtest) { 564 seq_printf(s, "dtest%d\n", pin->dtest); 565 } else if (pin->input && pin->output) { 566 if (pin->high_z) 567 seq_puts(s, "bi-dir high-z"); 568 else 569 seq_printf(s, "bi-dir %dOhm", pin->pullup); 570 } else if (pin->input) { 571 if (pin->dtest) 572 seq_printf(s, "in dtest%d", pin->dtest); 573 else 574 seq_puts(s, "in gpio"); 575 } else if (pin->output) { 576 seq_puts(s, "out "); 577 578 if (!pin->paired) { 579 seq_puts(s, pin->output_value ? 580 "high" : "low"); 581 } else { 582 seq_puts(s, pin->output_value ? 583 "inverted" : "follow"); 584 } 585 } 586 break; 587 case PM8XXX_MPP_ANALOG: 588 seq_puts(s, " analog "); 589 if (pin->output) { 590 seq_printf(s, "out %s ", aout_lvls[pin->aout_level]); 591 if (!pin->paired) { 592 seq_puts(s, pin->output_value ? 593 "high" : "low"); 594 } else { 595 seq_puts(s, pin->output_value ? 596 "inverted" : "follow"); 597 } 598 } else { 599 seq_printf(s, "input mux %s", amuxs[pin->amux]); 600 } 601 break; 602 case PM8XXX_MPP_SINK: 603 seq_printf(s, " sink %dmA ", pin->drive_strength); 604 if (pin->dtest) { 605 seq_printf(s, "dtest%d", pin->dtest); 606 } else { 607 if (!pin->paired) { 608 seq_puts(s, pin->output_value ? 609 "high" : "low"); 610 } else { 611 seq_puts(s, pin->output_value ? 612 "inverted" : "follow"); 613 } 614 } 615 break; 616 } 617 } 618 619 static void pm8xxx_mpp_dbg_show(struct seq_file *s, struct gpio_chip *chip) 620 { 621 unsigned gpio = chip->base; 622 unsigned i; 623 624 for (i = 0; i < chip->ngpio; i++, gpio++) { 625 pm8xxx_mpp_dbg_show_one(s, NULL, chip, i, gpio); 626 seq_puts(s, "\n"); 627 } 628 } 629 630 #else 631 #define pm8xxx_mpp_dbg_show NULL 632 #endif 633 634 static const struct gpio_chip pm8xxx_mpp_template = { 635 .direction_input = pm8xxx_mpp_direction_input, 636 .direction_output = pm8xxx_mpp_direction_output, 637 .get = pm8xxx_mpp_get, 638 .set = pm8xxx_mpp_set, 639 .of_xlate = pm8xxx_mpp_of_xlate, 640 .dbg_show = pm8xxx_mpp_dbg_show, 641 .owner = THIS_MODULE, 642 }; 643 644 static int pm8xxx_pin_populate(struct pm8xxx_mpp *pctrl, 645 struct pm8xxx_pin_data *pin) 646 { 647 unsigned int val; 648 unsigned level; 649 unsigned ctrl; 650 unsigned type; 651 int ret; 652 653 ret = regmap_read(pctrl->regmap, pin->reg, &val); 654 if (ret) { 655 dev_err(pctrl->dev, "failed to read register\n"); 656 return ret; 657 } 658 659 type = (val >> 5) & 7; 660 level = (val >> 2) & 7; 661 ctrl = (val) & 3; 662 663 switch (type) { 664 case PM8XXX_MPP_TYPE_D_INPUT: 665 pin->mode = PM8XXX_MPP_DIGITAL; 666 pin->input = true; 667 pin->power_source = level; 668 pin->dtest = ctrl; 669 break; 670 case PM8XXX_MPP_TYPE_D_OUTPUT: 671 pin->mode = PM8XXX_MPP_DIGITAL; 672 pin->output = true; 673 pin->power_source = level; 674 pin->output_value = !!(ctrl & BIT(0)); 675 pin->paired = !!(ctrl & BIT(1)); 676 break; 677 case PM8XXX_MPP_TYPE_D_BI_DIR: 678 pin->mode = PM8XXX_MPP_DIGITAL; 679 pin->input = true; 680 pin->output = true; 681 pin->power_source = level; 682 switch (ctrl) { 683 case PM8XXX_MPP_BI_PULLUP_1KOHM: 684 pin->pullup = 600; 685 break; 686 case PM8XXX_MPP_BI_PULLUP_OPEN: 687 pin->high_z = true; 688 break; 689 case PM8XXX_MPP_BI_PULLUP_10KOHM: 690 pin->pullup = 10000; 691 break; 692 case PM8XXX_MPP_BI_PULLUP_30KOHM: 693 pin->pullup = 30000; 694 break; 695 } 696 break; 697 case PM8XXX_MPP_TYPE_A_INPUT: 698 pin->mode = PM8XXX_MPP_ANALOG; 699 pin->input = true; 700 pin->amux = level; 701 break; 702 case PM8XXX_MPP_TYPE_A_OUTPUT: 703 pin->mode = PM8XXX_MPP_ANALOG; 704 pin->output = true; 705 pin->aout_level = level; 706 pin->output_value = !!(ctrl & BIT(0)); 707 pin->paired = !!(ctrl & BIT(1)); 708 break; 709 case PM8XXX_MPP_TYPE_SINK: 710 pin->mode = PM8XXX_MPP_SINK; 711 pin->drive_strength = 5 * (level + 1); 712 pin->output_value = !!(ctrl & BIT(0)); 713 pin->paired = !!(ctrl & BIT(1)); 714 break; 715 case PM8XXX_MPP_TYPE_DTEST_SINK: 716 pin->mode = PM8XXX_MPP_SINK; 717 pin->dtest = ctrl + 1; 718 pin->drive_strength = 5 * (level + 1); 719 break; 720 case PM8XXX_MPP_TYPE_DTEST_OUTPUT: 721 pin->mode = PM8XXX_MPP_DIGITAL; 722 pin->power_source = level; 723 if (ctrl >= 1) 724 pin->dtest = ctrl; 725 break; 726 } 727 728 return 0; 729 } 730 731 static int pm8xxx_mpp_domain_translate(struct irq_domain *domain, 732 struct irq_fwspec *fwspec, 733 unsigned long *hwirq, 734 unsigned int *type) 735 { 736 struct pm8xxx_mpp *pctrl = container_of(domain->host_data, 737 struct pm8xxx_mpp, chip); 738 739 if (fwspec->param_count != 2 || 740 fwspec->param[0] < PM8XXX_MPP_PHYSICAL_OFFSET || 741 fwspec->param[0] > pctrl->chip.ngpio) 742 return -EINVAL; 743 744 *hwirq = fwspec->param[0] - PM8XXX_MPP_PHYSICAL_OFFSET; 745 *type = fwspec->param[1]; 746 747 return 0; 748 } 749 750 static unsigned int pm8xxx_mpp_child_offset_to_irq(struct gpio_chip *chip, 751 unsigned int offset) 752 { 753 return offset + PM8XXX_MPP_PHYSICAL_OFFSET; 754 } 755 756 static int pm8821_mpp_child_to_parent_hwirq(struct gpio_chip *chip, 757 unsigned int child_hwirq, 758 unsigned int child_type, 759 unsigned int *parent_hwirq, 760 unsigned int *parent_type) 761 { 762 *parent_hwirq = child_hwirq + 24; 763 *parent_type = child_type; 764 765 return 0; 766 } 767 768 static int pm8xxx_mpp_child_to_parent_hwirq(struct gpio_chip *chip, 769 unsigned int child_hwirq, 770 unsigned int child_type, 771 unsigned int *parent_hwirq, 772 unsigned int *parent_type) 773 { 774 *parent_hwirq = child_hwirq + 0x80; 775 *parent_type = child_type; 776 777 return 0; 778 } 779 780 static const struct of_device_id pm8xxx_mpp_of_match[] = { 781 { .compatible = "qcom,pm8018-mpp", .data = (void *) 6 }, 782 { .compatible = "qcom,pm8038-mpp", .data = (void *) 6 }, 783 { .compatible = "qcom,pm8058-mpp", .data = (void *) 12 }, 784 { .compatible = "qcom,pm8821-mpp", .data = (void *) 4 }, 785 { .compatible = "qcom,pm8917-mpp", .data = (void *) 10 }, 786 { .compatible = "qcom,pm8921-mpp", .data = (void *) 12 }, 787 { }, 788 }; 789 MODULE_DEVICE_TABLE(of, pm8xxx_mpp_of_match); 790 791 static int pm8xxx_mpp_probe(struct platform_device *pdev) 792 { 793 struct pm8xxx_pin_data *pin_data; 794 struct irq_domain *parent_domain; 795 struct device_node *parent_node; 796 struct pinctrl_pin_desc *pins; 797 struct gpio_irq_chip *girq; 798 struct pm8xxx_mpp *pctrl; 799 int ret; 800 int i; 801 802 pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL); 803 if (!pctrl) 804 return -ENOMEM; 805 806 pctrl->dev = &pdev->dev; 807 pctrl->npins = (uintptr_t) device_get_match_data(&pdev->dev); 808 809 pctrl->regmap = dev_get_regmap(pdev->dev.parent, NULL); 810 if (!pctrl->regmap) { 811 dev_err(&pdev->dev, "parent regmap unavailable\n"); 812 return -ENXIO; 813 } 814 815 pctrl->desc = pm8xxx_pinctrl_desc; 816 pctrl->desc.npins = pctrl->npins; 817 818 pins = devm_kcalloc(&pdev->dev, 819 pctrl->desc.npins, 820 sizeof(struct pinctrl_pin_desc), 821 GFP_KERNEL); 822 if (!pins) 823 return -ENOMEM; 824 825 pin_data = devm_kcalloc(&pdev->dev, 826 pctrl->desc.npins, 827 sizeof(struct pm8xxx_pin_data), 828 GFP_KERNEL); 829 if (!pin_data) 830 return -ENOMEM; 831 832 for (i = 0; i < pctrl->desc.npins; i++) { 833 pin_data[i].reg = SSBI_REG_ADDR_MPP(i); 834 835 ret = pm8xxx_pin_populate(pctrl, &pin_data[i]); 836 if (ret) 837 return ret; 838 839 pins[i].number = i; 840 pins[i].name = pm8xxx_groups[i]; 841 pins[i].drv_data = &pin_data[i]; 842 } 843 pctrl->desc.pins = pins; 844 845 pctrl->desc.num_custom_params = ARRAY_SIZE(pm8xxx_mpp_bindings); 846 pctrl->desc.custom_params = pm8xxx_mpp_bindings; 847 #ifdef CONFIG_DEBUG_FS 848 pctrl->desc.custom_conf_items = pm8xxx_conf_items; 849 #endif 850 851 pctrl->pctrl = devm_pinctrl_register(&pdev->dev, &pctrl->desc, pctrl); 852 if (IS_ERR(pctrl->pctrl)) { 853 dev_err(&pdev->dev, "couldn't register pm8xxx mpp driver\n"); 854 return PTR_ERR(pctrl->pctrl); 855 } 856 857 pctrl->chip = pm8xxx_mpp_template; 858 pctrl->chip.base = -1; 859 pctrl->chip.parent = &pdev->dev; 860 pctrl->chip.of_node = pdev->dev.of_node; 861 pctrl->chip.of_gpio_n_cells = 2; 862 pctrl->chip.label = dev_name(pctrl->dev); 863 pctrl->chip.ngpio = pctrl->npins; 864 865 parent_node = of_irq_find_parent(pctrl->dev->of_node); 866 if (!parent_node) 867 return -ENXIO; 868 869 parent_domain = irq_find_host(parent_node); 870 of_node_put(parent_node); 871 if (!parent_domain) 872 return -ENXIO; 873 874 pctrl->irq.name = "ssbi-mpp"; 875 pctrl->irq.irq_mask_ack = irq_chip_mask_ack_parent; 876 pctrl->irq.irq_unmask = irq_chip_unmask_parent; 877 pctrl->irq.irq_set_type = irq_chip_set_type_parent; 878 pctrl->irq.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE; 879 880 girq = &pctrl->chip.irq; 881 girq->chip = &pctrl->irq; 882 girq->default_type = IRQ_TYPE_NONE; 883 girq->handler = handle_level_irq; 884 girq->fwnode = of_node_to_fwnode(pctrl->dev->of_node); 885 girq->parent_domain = parent_domain; 886 if (of_device_is_compatible(pdev->dev.of_node, "qcom,pm8821-mpp")) 887 girq->child_to_parent_hwirq = pm8821_mpp_child_to_parent_hwirq; 888 else 889 girq->child_to_parent_hwirq = pm8xxx_mpp_child_to_parent_hwirq; 890 girq->populate_parent_alloc_arg = gpiochip_populate_parent_fwspec_twocell; 891 girq->child_offset_to_irq = pm8xxx_mpp_child_offset_to_irq; 892 girq->child_irq_domain_ops.translate = pm8xxx_mpp_domain_translate; 893 894 ret = gpiochip_add_data(&pctrl->chip, pctrl); 895 if (ret) { 896 dev_err(&pdev->dev, "failed register gpiochip\n"); 897 return ret; 898 } 899 900 ret = gpiochip_add_pin_range(&pctrl->chip, 901 dev_name(pctrl->dev), 902 0, 0, pctrl->chip.ngpio); 903 if (ret) { 904 dev_err(pctrl->dev, "failed to add pin range\n"); 905 goto unregister_gpiochip; 906 } 907 908 platform_set_drvdata(pdev, pctrl); 909 910 dev_dbg(&pdev->dev, "Qualcomm pm8xxx mpp driver probed\n"); 911 912 return 0; 913 914 unregister_gpiochip: 915 gpiochip_remove(&pctrl->chip); 916 917 return ret; 918 } 919 920 static int pm8xxx_mpp_remove(struct platform_device *pdev) 921 { 922 struct pm8xxx_mpp *pctrl = platform_get_drvdata(pdev); 923 924 gpiochip_remove(&pctrl->chip); 925 926 return 0; 927 } 928 929 static struct platform_driver pm8xxx_mpp_driver = { 930 .driver = { 931 .name = "qcom-ssbi-mpp", 932 .of_match_table = pm8xxx_mpp_of_match, 933 }, 934 .probe = pm8xxx_mpp_probe, 935 .remove = pm8xxx_mpp_remove, 936 }; 937 938 module_platform_driver(pm8xxx_mpp_driver); 939 940 MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>"); 941 MODULE_DESCRIPTION("Qualcomm PM8xxx MPP driver"); 942 MODULE_LICENSE("GPL v2"); 943