1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2012-2014, 2016-2021 The Linux Foundation. All rights reserved. 4 * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved. 5 */ 6 7 #include <linux/gpio/driver.h> 8 #include <linux/interrupt.h> 9 #include <linux/module.h> 10 #include <linux/of.h> 11 #include <linux/of_irq.h> 12 #include <linux/platform_device.h> 13 #include <linux/regmap.h> 14 #include <linux/seq_file.h> 15 #include <linux/slab.h> 16 #include <linux/spmi.h> 17 #include <linux/types.h> 18 19 #include <linux/pinctrl/pinconf-generic.h> 20 #include <linux/pinctrl/pinconf.h> 21 #include <linux/pinctrl/pinmux.h> 22 23 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h> 24 25 #include "../core.h" 26 #include "../pinctrl-utils.h" 27 28 #define PMIC_GPIO_ADDRESS_RANGE 0x100 29 30 /* type and subtype registers base address offsets */ 31 #define PMIC_GPIO_REG_TYPE 0x4 32 #define PMIC_GPIO_REG_SUBTYPE 0x5 33 34 /* GPIO peripheral type and subtype out_values */ 35 #define PMIC_GPIO_TYPE 0x10 36 #define PMIC_GPIO_SUBTYPE_GPIO_4CH 0x1 37 #define PMIC_GPIO_SUBTYPE_GPIOC_4CH 0x5 38 #define PMIC_GPIO_SUBTYPE_GPIO_8CH 0x9 39 #define PMIC_GPIO_SUBTYPE_GPIOC_8CH 0xd 40 #define PMIC_GPIO_SUBTYPE_GPIO_LV 0x10 41 #define PMIC_GPIO_SUBTYPE_GPIO_MV 0x11 42 #define PMIC_GPIO_SUBTYPE_GPIO_LV_VIN2 0x12 43 #define PMIC_GPIO_SUBTYPE_GPIO_MV_VIN3 0x13 44 45 #define PMIC_MPP_REG_RT_STS 0x10 46 #define PMIC_MPP_REG_RT_STS_VAL_MASK 0x1 47 48 /* control register base address offsets */ 49 #define PMIC_GPIO_REG_MODE_CTL 0x40 50 #define PMIC_GPIO_REG_DIG_VIN_CTL 0x41 51 #define PMIC_GPIO_REG_DIG_PULL_CTL 0x42 52 #define PMIC_GPIO_REG_LV_MV_DIG_OUT_SOURCE_CTL 0x44 53 #define PMIC_GPIO_REG_DIG_IN_CTL 0x43 54 #define PMIC_GPIO_REG_DIG_OUT_CTL 0x45 55 #define PMIC_GPIO_REG_EN_CTL 0x46 56 #define PMIC_GPIO_REG_LV_MV_ANA_PASS_THRU_SEL 0x4A 57 58 /* PMIC_GPIO_REG_MODE_CTL */ 59 #define PMIC_GPIO_REG_MODE_VALUE_SHIFT 0x1 60 #define PMIC_GPIO_REG_MODE_FUNCTION_SHIFT 1 61 #define PMIC_GPIO_REG_MODE_FUNCTION_MASK 0x7 62 #define PMIC_GPIO_REG_MODE_DIR_SHIFT 4 63 #define PMIC_GPIO_REG_MODE_DIR_MASK 0x7 64 65 #define PMIC_GPIO_MODE_DIGITAL_INPUT 0 66 #define PMIC_GPIO_MODE_DIGITAL_OUTPUT 1 67 #define PMIC_GPIO_MODE_DIGITAL_INPUT_OUTPUT 2 68 #define PMIC_GPIO_MODE_ANALOG_PASS_THRU 3 69 #define PMIC_GPIO_REG_LV_MV_MODE_DIR_MASK 0x3 70 71 /* PMIC_GPIO_REG_DIG_VIN_CTL */ 72 #define PMIC_GPIO_REG_VIN_SHIFT 0 73 #define PMIC_GPIO_REG_VIN_MASK 0x7 74 75 /* PMIC_GPIO_REG_DIG_PULL_CTL */ 76 #define PMIC_GPIO_REG_PULL_SHIFT 0 77 #define PMIC_GPIO_REG_PULL_MASK 0x7 78 79 #define PMIC_GPIO_PULL_DOWN 4 80 #define PMIC_GPIO_PULL_DISABLE 5 81 82 /* PMIC_GPIO_REG_LV_MV_DIG_OUT_SOURCE_CTL for LV/MV */ 83 #define PMIC_GPIO_LV_MV_OUTPUT_INVERT 0x80 84 #define PMIC_GPIO_LV_MV_OUTPUT_INVERT_SHIFT 7 85 #define PMIC_GPIO_LV_MV_OUTPUT_SOURCE_SEL_MASK 0xF 86 87 /* PMIC_GPIO_REG_DIG_IN_CTL */ 88 #define PMIC_GPIO_LV_MV_DIG_IN_DTEST_EN 0x80 89 #define PMIC_GPIO_LV_MV_DIG_IN_DTEST_SEL_MASK 0x7 90 #define PMIC_GPIO_DIG_IN_DTEST_SEL_MASK 0xf 91 92 /* PMIC_GPIO_REG_DIG_OUT_CTL */ 93 #define PMIC_GPIO_REG_OUT_STRENGTH_SHIFT 0 94 #define PMIC_GPIO_REG_OUT_STRENGTH_MASK 0x3 95 #define PMIC_GPIO_REG_OUT_TYPE_SHIFT 4 96 #define PMIC_GPIO_REG_OUT_TYPE_MASK 0x3 97 98 /* 99 * Output type - indicates pin should be configured as push-pull, 100 * open drain or open source. 101 */ 102 #define PMIC_GPIO_OUT_BUF_CMOS 0 103 #define PMIC_GPIO_OUT_BUF_OPEN_DRAIN_NMOS 1 104 #define PMIC_GPIO_OUT_BUF_OPEN_DRAIN_PMOS 2 105 106 #define PMIC_GPIO_OUT_STRENGTH_LOW 1 107 #define PMIC_GPIO_OUT_STRENGTH_HIGH 3 108 109 /* PMIC_GPIO_REG_EN_CTL */ 110 #define PMIC_GPIO_REG_MASTER_EN_SHIFT 7 111 112 #define PMIC_GPIO_PHYSICAL_OFFSET 1 113 114 /* PMIC_GPIO_REG_LV_MV_ANA_PASS_THRU_SEL */ 115 #define PMIC_GPIO_LV_MV_ANA_MUX_SEL_MASK 0x3 116 117 /* Qualcomm specific pin configurations */ 118 #define PMIC_GPIO_CONF_PULL_UP (PIN_CONFIG_END + 1) 119 #define PMIC_GPIO_CONF_STRENGTH (PIN_CONFIG_END + 2) 120 #define PMIC_GPIO_CONF_ATEST (PIN_CONFIG_END + 3) 121 #define PMIC_GPIO_CONF_ANALOG_PASS (PIN_CONFIG_END + 4) 122 #define PMIC_GPIO_CONF_DTEST_BUFFER (PIN_CONFIG_END + 5) 123 124 /* The index of each function in pmic_gpio_functions[] array */ 125 enum pmic_gpio_func_index { 126 PMIC_GPIO_FUNC_INDEX_NORMAL, 127 PMIC_GPIO_FUNC_INDEX_PAIRED, 128 PMIC_GPIO_FUNC_INDEX_FUNC1, 129 PMIC_GPIO_FUNC_INDEX_FUNC2, 130 PMIC_GPIO_FUNC_INDEX_FUNC3, 131 PMIC_GPIO_FUNC_INDEX_FUNC4, 132 PMIC_GPIO_FUNC_INDEX_DTEST1, 133 PMIC_GPIO_FUNC_INDEX_DTEST2, 134 PMIC_GPIO_FUNC_INDEX_DTEST3, 135 PMIC_GPIO_FUNC_INDEX_DTEST4, 136 }; 137 138 /** 139 * struct pmic_gpio_pad - keep current GPIO settings 140 * @base: Address base in SPMI device. 141 * @is_enabled: Set to false when GPIO should be put in high Z state. 142 * @out_value: Cached pin output value 143 * @have_buffer: Set to true if GPIO output could be configured in push-pull, 144 * open-drain or open-source mode. 145 * @output_enabled: Set to true if GPIO output logic is enabled. 146 * @input_enabled: Set to true if GPIO input buffer logic is enabled. 147 * @analog_pass: Set to true if GPIO is in analog-pass-through mode. 148 * @lv_mv_type: Set to true if GPIO subtype is GPIO_LV(0x10) or GPIO_MV(0x11). 149 * @num_sources: Number of power-sources supported by this GPIO. 150 * @power_source: Current power-source used. 151 * @buffer_type: Push-pull, open-drain or open-source. 152 * @pullup: Constant current which flow trough GPIO output buffer. 153 * @strength: No, Low, Medium, High 154 * @function: See pmic_gpio_functions[] 155 * @atest: the ATEST selection for GPIO analog-pass-through mode 156 * @dtest_buffer: the DTEST buffer selection for digital input mode. 157 */ 158 struct pmic_gpio_pad { 159 u16 base; 160 bool is_enabled; 161 bool out_value; 162 bool have_buffer; 163 bool output_enabled; 164 bool input_enabled; 165 bool analog_pass; 166 bool lv_mv_type; 167 unsigned int num_sources; 168 unsigned int power_source; 169 unsigned int buffer_type; 170 unsigned int pullup; 171 unsigned int strength; 172 unsigned int function; 173 unsigned int atest; 174 unsigned int dtest_buffer; 175 }; 176 177 struct pmic_gpio_state { 178 struct device *dev; 179 struct regmap *map; 180 struct pinctrl_dev *ctrl; 181 struct gpio_chip chip; 182 u8 usid; 183 u8 pid_base; 184 }; 185 186 static const struct pinconf_generic_params pmic_gpio_bindings[] = { 187 {"qcom,pull-up-strength", PMIC_GPIO_CONF_PULL_UP, 0}, 188 {"qcom,drive-strength", PMIC_GPIO_CONF_STRENGTH, 0}, 189 {"qcom,atest", PMIC_GPIO_CONF_ATEST, 0}, 190 {"qcom,analog-pass", PMIC_GPIO_CONF_ANALOG_PASS, 0}, 191 {"qcom,dtest-buffer", PMIC_GPIO_CONF_DTEST_BUFFER, 0}, 192 }; 193 194 #ifdef CONFIG_DEBUG_FS 195 static const struct pin_config_item pmic_conf_items[ARRAY_SIZE(pmic_gpio_bindings)] = { 196 PCONFDUMP(PMIC_GPIO_CONF_PULL_UP, "pull up strength", NULL, true), 197 PCONFDUMP(PMIC_GPIO_CONF_STRENGTH, "drive-strength", NULL, true), 198 PCONFDUMP(PMIC_GPIO_CONF_ATEST, "atest", NULL, true), 199 PCONFDUMP(PMIC_GPIO_CONF_ANALOG_PASS, "analog-pass", NULL, true), 200 PCONFDUMP(PMIC_GPIO_CONF_DTEST_BUFFER, "dtest-buffer", NULL, true), 201 }; 202 #endif 203 204 static const char *const pmic_gpio_groups[] = { 205 "gpio1", "gpio2", "gpio3", "gpio4", "gpio5", "gpio6", "gpio7", "gpio8", 206 "gpio9", "gpio10", "gpio11", "gpio12", "gpio13", "gpio14", "gpio15", 207 "gpio16", "gpio17", "gpio18", "gpio19", "gpio20", "gpio21", "gpio22", 208 "gpio23", "gpio24", "gpio25", "gpio26", "gpio27", "gpio28", "gpio29", 209 "gpio30", "gpio31", "gpio32", "gpio33", "gpio34", "gpio35", "gpio36", 210 }; 211 212 static const char *const pmic_gpio_functions[] = { 213 [PMIC_GPIO_FUNC_INDEX_NORMAL] = PMIC_GPIO_FUNC_NORMAL, 214 [PMIC_GPIO_FUNC_INDEX_PAIRED] = PMIC_GPIO_FUNC_PAIRED, 215 [PMIC_GPIO_FUNC_INDEX_FUNC1] = PMIC_GPIO_FUNC_FUNC1, 216 [PMIC_GPIO_FUNC_INDEX_FUNC2] = PMIC_GPIO_FUNC_FUNC2, 217 [PMIC_GPIO_FUNC_INDEX_FUNC3] = PMIC_GPIO_FUNC_FUNC3, 218 [PMIC_GPIO_FUNC_INDEX_FUNC4] = PMIC_GPIO_FUNC_FUNC4, 219 [PMIC_GPIO_FUNC_INDEX_DTEST1] = PMIC_GPIO_FUNC_DTEST1, 220 [PMIC_GPIO_FUNC_INDEX_DTEST2] = PMIC_GPIO_FUNC_DTEST2, 221 [PMIC_GPIO_FUNC_INDEX_DTEST3] = PMIC_GPIO_FUNC_DTEST3, 222 [PMIC_GPIO_FUNC_INDEX_DTEST4] = PMIC_GPIO_FUNC_DTEST4, 223 }; 224 pmic_gpio_read(struct pmic_gpio_state * state,struct pmic_gpio_pad * pad,unsigned int addr)225 static int pmic_gpio_read(struct pmic_gpio_state *state, 226 struct pmic_gpio_pad *pad, unsigned int addr) 227 { 228 unsigned int val; 229 int ret; 230 231 ret = regmap_read(state->map, pad->base + addr, &val); 232 if (ret < 0) 233 dev_err(state->dev, "read 0x%x failed\n", addr); 234 else 235 ret = val; 236 237 return ret; 238 } 239 pmic_gpio_write(struct pmic_gpio_state * state,struct pmic_gpio_pad * pad,unsigned int addr,unsigned int val)240 static int pmic_gpio_write(struct pmic_gpio_state *state, 241 struct pmic_gpio_pad *pad, unsigned int addr, 242 unsigned int val) 243 { 244 int ret; 245 246 ret = regmap_write(state->map, pad->base + addr, val); 247 if (ret < 0) 248 dev_err(state->dev, "write 0x%x failed\n", addr); 249 250 return ret; 251 } 252 pmic_gpio_get_groups_count(struct pinctrl_dev * pctldev)253 static int pmic_gpio_get_groups_count(struct pinctrl_dev *pctldev) 254 { 255 /* Every PIN is a group */ 256 return pctldev->desc->npins; 257 } 258 pmic_gpio_get_group_name(struct pinctrl_dev * pctldev,unsigned pin)259 static const char *pmic_gpio_get_group_name(struct pinctrl_dev *pctldev, 260 unsigned pin) 261 { 262 return pctldev->desc->pins[pin].name; 263 } 264 pmic_gpio_get_group_pins(struct pinctrl_dev * pctldev,unsigned pin,const unsigned ** pins,unsigned * num_pins)265 static int pmic_gpio_get_group_pins(struct pinctrl_dev *pctldev, unsigned pin, 266 const unsigned **pins, unsigned *num_pins) 267 { 268 *pins = &pctldev->desc->pins[pin].number; 269 *num_pins = 1; 270 return 0; 271 } 272 273 static const struct pinctrl_ops pmic_gpio_pinctrl_ops = { 274 .get_groups_count = pmic_gpio_get_groups_count, 275 .get_group_name = pmic_gpio_get_group_name, 276 .get_group_pins = pmic_gpio_get_group_pins, 277 .dt_node_to_map = pinconf_generic_dt_node_to_map_group, 278 .dt_free_map = pinctrl_utils_free_map, 279 }; 280 pmic_gpio_get_functions_count(struct pinctrl_dev * pctldev)281 static int pmic_gpio_get_functions_count(struct pinctrl_dev *pctldev) 282 { 283 return ARRAY_SIZE(pmic_gpio_functions); 284 } 285 pmic_gpio_get_function_name(struct pinctrl_dev * pctldev,unsigned function)286 static const char *pmic_gpio_get_function_name(struct pinctrl_dev *pctldev, 287 unsigned function) 288 { 289 return pmic_gpio_functions[function]; 290 } 291 pmic_gpio_get_function_groups(struct pinctrl_dev * pctldev,unsigned function,const char * const ** groups,unsigned * const num_qgroups)292 static int pmic_gpio_get_function_groups(struct pinctrl_dev *pctldev, 293 unsigned function, 294 const char *const **groups, 295 unsigned *const num_qgroups) 296 { 297 *groups = pmic_gpio_groups; 298 *num_qgroups = pctldev->desc->npins; 299 return 0; 300 } 301 pmic_gpio_set_mux(struct pinctrl_dev * pctldev,unsigned function,unsigned pin)302 static int pmic_gpio_set_mux(struct pinctrl_dev *pctldev, unsigned function, 303 unsigned pin) 304 { 305 struct pmic_gpio_state *state = pinctrl_dev_get_drvdata(pctldev); 306 struct pmic_gpio_pad *pad; 307 unsigned int val; 308 int ret; 309 310 if (function > PMIC_GPIO_FUNC_INDEX_DTEST4) { 311 pr_err("function: %d is not defined\n", function); 312 return -EINVAL; 313 } 314 315 pad = pctldev->desc->pins[pin].drv_data; 316 /* 317 * Non-LV/MV subtypes only support 2 special functions, 318 * offsetting the dtestx function values by 2 319 */ 320 if (!pad->lv_mv_type) { 321 if (function == PMIC_GPIO_FUNC_INDEX_FUNC3 || 322 function == PMIC_GPIO_FUNC_INDEX_FUNC4) { 323 pr_err("LV/MV subtype doesn't have func3/func4\n"); 324 return -EINVAL; 325 } 326 if (function >= PMIC_GPIO_FUNC_INDEX_DTEST1) 327 function -= (PMIC_GPIO_FUNC_INDEX_DTEST1 - 328 PMIC_GPIO_FUNC_INDEX_FUNC3); 329 } 330 331 pad->function = function; 332 333 if (pad->analog_pass) 334 val = PMIC_GPIO_MODE_ANALOG_PASS_THRU; 335 else if (pad->output_enabled && pad->input_enabled) 336 val = PMIC_GPIO_MODE_DIGITAL_INPUT_OUTPUT; 337 else if (pad->output_enabled) 338 val = PMIC_GPIO_MODE_DIGITAL_OUTPUT; 339 else 340 val = PMIC_GPIO_MODE_DIGITAL_INPUT; 341 342 if (pad->lv_mv_type) { 343 ret = pmic_gpio_write(state, pad, 344 PMIC_GPIO_REG_MODE_CTL, val); 345 if (ret < 0) 346 return ret; 347 348 val = pad->atest - 1; 349 ret = pmic_gpio_write(state, pad, 350 PMIC_GPIO_REG_LV_MV_ANA_PASS_THRU_SEL, val); 351 if (ret < 0) 352 return ret; 353 354 val = pad->out_value 355 << PMIC_GPIO_LV_MV_OUTPUT_INVERT_SHIFT; 356 val |= pad->function 357 & PMIC_GPIO_LV_MV_OUTPUT_SOURCE_SEL_MASK; 358 ret = pmic_gpio_write(state, pad, 359 PMIC_GPIO_REG_LV_MV_DIG_OUT_SOURCE_CTL, val); 360 if (ret < 0) 361 return ret; 362 } else { 363 val = val << PMIC_GPIO_REG_MODE_DIR_SHIFT; 364 val |= pad->function << PMIC_GPIO_REG_MODE_FUNCTION_SHIFT; 365 val |= pad->out_value & PMIC_GPIO_REG_MODE_VALUE_SHIFT; 366 367 ret = pmic_gpio_write(state, pad, PMIC_GPIO_REG_MODE_CTL, val); 368 if (ret < 0) 369 return ret; 370 } 371 372 val = pad->is_enabled << PMIC_GPIO_REG_MASTER_EN_SHIFT; 373 374 return pmic_gpio_write(state, pad, PMIC_GPIO_REG_EN_CTL, val); 375 } 376 377 static const struct pinmux_ops pmic_gpio_pinmux_ops = { 378 .get_functions_count = pmic_gpio_get_functions_count, 379 .get_function_name = pmic_gpio_get_function_name, 380 .get_function_groups = pmic_gpio_get_function_groups, 381 .set_mux = pmic_gpio_set_mux, 382 }; 383 pmic_gpio_config_get(struct pinctrl_dev * pctldev,unsigned int pin,unsigned long * config)384 static int pmic_gpio_config_get(struct pinctrl_dev *pctldev, 385 unsigned int pin, unsigned long *config) 386 { 387 unsigned param = pinconf_to_config_param(*config); 388 struct pmic_gpio_pad *pad; 389 unsigned arg; 390 391 pad = pctldev->desc->pins[pin].drv_data; 392 393 switch (param) { 394 case PIN_CONFIG_DRIVE_PUSH_PULL: 395 if (pad->buffer_type != PMIC_GPIO_OUT_BUF_CMOS) 396 return -EINVAL; 397 arg = 1; 398 break; 399 case PIN_CONFIG_DRIVE_OPEN_DRAIN: 400 if (pad->buffer_type != PMIC_GPIO_OUT_BUF_OPEN_DRAIN_NMOS) 401 return -EINVAL; 402 arg = 1; 403 break; 404 case PIN_CONFIG_DRIVE_OPEN_SOURCE: 405 if (pad->buffer_type != PMIC_GPIO_OUT_BUF_OPEN_DRAIN_PMOS) 406 return -EINVAL; 407 arg = 1; 408 break; 409 case PIN_CONFIG_BIAS_PULL_DOWN: 410 if (pad->pullup != PMIC_GPIO_PULL_DOWN) 411 return -EINVAL; 412 arg = 1; 413 break; 414 case PIN_CONFIG_BIAS_DISABLE: 415 if (pad->pullup != PMIC_GPIO_PULL_DISABLE) 416 return -EINVAL; 417 arg = 1; 418 break; 419 case PIN_CONFIG_BIAS_PULL_UP: 420 if (pad->pullup != PMIC_GPIO_PULL_UP_30) 421 return -EINVAL; 422 arg = 1; 423 break; 424 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: 425 if (pad->is_enabled) 426 return -EINVAL; 427 arg = 1; 428 break; 429 case PIN_CONFIG_POWER_SOURCE: 430 arg = pad->power_source; 431 break; 432 case PIN_CONFIG_INPUT_ENABLE: 433 if (!pad->input_enabled) 434 return -EINVAL; 435 arg = 1; 436 break; 437 case PIN_CONFIG_OUTPUT_ENABLE: 438 arg = pad->output_enabled; 439 break; 440 case PIN_CONFIG_OUTPUT: 441 arg = pad->out_value; 442 break; 443 case PMIC_GPIO_CONF_PULL_UP: 444 arg = pad->pullup; 445 break; 446 case PMIC_GPIO_CONF_STRENGTH: 447 switch (pad->strength) { 448 case PMIC_GPIO_OUT_STRENGTH_HIGH: 449 arg = PMIC_GPIO_STRENGTH_HIGH; 450 break; 451 case PMIC_GPIO_OUT_STRENGTH_LOW: 452 arg = PMIC_GPIO_STRENGTH_LOW; 453 break; 454 default: 455 arg = pad->strength; 456 break; 457 } 458 break; 459 case PMIC_GPIO_CONF_ATEST: 460 arg = pad->atest; 461 break; 462 case PMIC_GPIO_CONF_ANALOG_PASS: 463 arg = pad->analog_pass; 464 break; 465 case PMIC_GPIO_CONF_DTEST_BUFFER: 466 arg = pad->dtest_buffer; 467 break; 468 default: 469 return -EINVAL; 470 } 471 472 *config = pinconf_to_config_packed(param, arg); 473 return 0; 474 } 475 pmic_gpio_config_set(struct pinctrl_dev * pctldev,unsigned int pin,unsigned long * configs,unsigned nconfs)476 static int pmic_gpio_config_set(struct pinctrl_dev *pctldev, unsigned int pin, 477 unsigned long *configs, unsigned nconfs) 478 { 479 struct pmic_gpio_state *state = pinctrl_dev_get_drvdata(pctldev); 480 struct pmic_gpio_pad *pad; 481 unsigned param, arg; 482 unsigned int val; 483 int i, ret; 484 485 pad = pctldev->desc->pins[pin].drv_data; 486 487 pad->is_enabled = true; 488 for (i = 0; i < nconfs; i++) { 489 param = pinconf_to_config_param(configs[i]); 490 arg = pinconf_to_config_argument(configs[i]); 491 492 switch (param) { 493 case PIN_CONFIG_DRIVE_PUSH_PULL: 494 pad->buffer_type = PMIC_GPIO_OUT_BUF_CMOS; 495 break; 496 case PIN_CONFIG_DRIVE_OPEN_DRAIN: 497 if (!pad->have_buffer) 498 return -EINVAL; 499 pad->buffer_type = PMIC_GPIO_OUT_BUF_OPEN_DRAIN_NMOS; 500 break; 501 case PIN_CONFIG_DRIVE_OPEN_SOURCE: 502 if (!pad->have_buffer) 503 return -EINVAL; 504 pad->buffer_type = PMIC_GPIO_OUT_BUF_OPEN_DRAIN_PMOS; 505 break; 506 case PIN_CONFIG_BIAS_DISABLE: 507 pad->pullup = PMIC_GPIO_PULL_DISABLE; 508 break; 509 case PIN_CONFIG_BIAS_PULL_UP: 510 pad->pullup = PMIC_GPIO_PULL_UP_30; 511 break; 512 case PIN_CONFIG_BIAS_PULL_DOWN: 513 if (arg) 514 pad->pullup = PMIC_GPIO_PULL_DOWN; 515 else 516 pad->pullup = PMIC_GPIO_PULL_DISABLE; 517 break; 518 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: 519 pad->is_enabled = false; 520 break; 521 case PIN_CONFIG_POWER_SOURCE: 522 if (arg >= pad->num_sources) 523 return -EINVAL; 524 pad->power_source = arg; 525 break; 526 case PIN_CONFIG_INPUT_ENABLE: 527 pad->input_enabled = arg ? true : false; 528 break; 529 case PIN_CONFIG_OUTPUT_ENABLE: 530 pad->output_enabled = arg ? true : false; 531 break; 532 case PIN_CONFIG_OUTPUT: 533 pad->output_enabled = true; 534 pad->out_value = arg; 535 break; 536 case PMIC_GPIO_CONF_PULL_UP: 537 if (arg > PMIC_GPIO_PULL_UP_1P5_30) 538 return -EINVAL; 539 pad->pullup = arg; 540 break; 541 case PMIC_GPIO_CONF_STRENGTH: 542 if (arg > PMIC_GPIO_STRENGTH_LOW) 543 return -EINVAL; 544 switch (arg) { 545 case PMIC_GPIO_STRENGTH_HIGH: 546 pad->strength = PMIC_GPIO_OUT_STRENGTH_HIGH; 547 break; 548 case PMIC_GPIO_STRENGTH_LOW: 549 pad->strength = PMIC_GPIO_OUT_STRENGTH_LOW; 550 break; 551 default: 552 pad->strength = arg; 553 break; 554 } 555 break; 556 case PMIC_GPIO_CONF_ATEST: 557 if (!pad->lv_mv_type || arg > 4) 558 return -EINVAL; 559 pad->atest = arg; 560 break; 561 case PMIC_GPIO_CONF_ANALOG_PASS: 562 if (!pad->lv_mv_type) 563 return -EINVAL; 564 pad->analog_pass = true; 565 break; 566 case PMIC_GPIO_CONF_DTEST_BUFFER: 567 if (arg > 4) 568 return -EINVAL; 569 pad->dtest_buffer = arg; 570 break; 571 default: 572 return -EINVAL; 573 } 574 } 575 576 val = pad->power_source << PMIC_GPIO_REG_VIN_SHIFT; 577 578 ret = pmic_gpio_write(state, pad, PMIC_GPIO_REG_DIG_VIN_CTL, val); 579 if (ret < 0) 580 return ret; 581 582 val = pad->pullup << PMIC_GPIO_REG_PULL_SHIFT; 583 584 ret = pmic_gpio_write(state, pad, PMIC_GPIO_REG_DIG_PULL_CTL, val); 585 if (ret < 0) 586 return ret; 587 588 val = pad->buffer_type << PMIC_GPIO_REG_OUT_TYPE_SHIFT; 589 val |= pad->strength << PMIC_GPIO_REG_OUT_STRENGTH_SHIFT; 590 591 ret = pmic_gpio_write(state, pad, PMIC_GPIO_REG_DIG_OUT_CTL, val); 592 if (ret < 0) 593 return ret; 594 595 if (pad->dtest_buffer == 0) { 596 val = 0; 597 } else { 598 if (pad->lv_mv_type) { 599 val = pad->dtest_buffer - 1; 600 val |= PMIC_GPIO_LV_MV_DIG_IN_DTEST_EN; 601 } else { 602 val = BIT(pad->dtest_buffer - 1); 603 } 604 } 605 ret = pmic_gpio_write(state, pad, PMIC_GPIO_REG_DIG_IN_CTL, val); 606 if (ret < 0) 607 return ret; 608 609 if (pad->analog_pass) 610 val = PMIC_GPIO_MODE_ANALOG_PASS_THRU; 611 else if (pad->output_enabled && pad->input_enabled) 612 val = PMIC_GPIO_MODE_DIGITAL_INPUT_OUTPUT; 613 else if (pad->output_enabled) 614 val = PMIC_GPIO_MODE_DIGITAL_OUTPUT; 615 else 616 val = PMIC_GPIO_MODE_DIGITAL_INPUT; 617 618 if (pad->lv_mv_type) { 619 ret = pmic_gpio_write(state, pad, 620 PMIC_GPIO_REG_MODE_CTL, val); 621 if (ret < 0) 622 return ret; 623 624 val = pad->atest - 1; 625 ret = pmic_gpio_write(state, pad, 626 PMIC_GPIO_REG_LV_MV_ANA_PASS_THRU_SEL, val); 627 if (ret < 0) 628 return ret; 629 630 val = pad->out_value 631 << PMIC_GPIO_LV_MV_OUTPUT_INVERT_SHIFT; 632 val |= pad->function 633 & PMIC_GPIO_LV_MV_OUTPUT_SOURCE_SEL_MASK; 634 ret = pmic_gpio_write(state, pad, 635 PMIC_GPIO_REG_LV_MV_DIG_OUT_SOURCE_CTL, val); 636 if (ret < 0) 637 return ret; 638 } else { 639 val = val << PMIC_GPIO_REG_MODE_DIR_SHIFT; 640 val |= pad->function << PMIC_GPIO_REG_MODE_FUNCTION_SHIFT; 641 val |= pad->out_value & PMIC_GPIO_REG_MODE_VALUE_SHIFT; 642 643 ret = pmic_gpio_write(state, pad, PMIC_GPIO_REG_MODE_CTL, val); 644 if (ret < 0) 645 return ret; 646 } 647 648 val = pad->is_enabled << PMIC_GPIO_REG_MASTER_EN_SHIFT; 649 650 ret = pmic_gpio_write(state, pad, PMIC_GPIO_REG_EN_CTL, val); 651 652 return ret; 653 } 654 pmic_gpio_config_dbg_show(struct pinctrl_dev * pctldev,struct seq_file * s,unsigned pin)655 static void pmic_gpio_config_dbg_show(struct pinctrl_dev *pctldev, 656 struct seq_file *s, unsigned pin) 657 { 658 struct pmic_gpio_state *state = pinctrl_dev_get_drvdata(pctldev); 659 struct pmic_gpio_pad *pad; 660 int ret, val, function; 661 662 static const char *const biases[] = { 663 "pull-up 30uA", "pull-up 1.5uA", "pull-up 31.5uA", 664 "pull-up 1.5uA + 30uA boost", "pull-down 10uA", "no pull" 665 }; 666 static const char *const buffer_types[] = { 667 "push-pull", "open-drain", "open-source" 668 }; 669 static const char *const strengths[] = { 670 "no", "low", "medium", "high" 671 }; 672 673 pad = pctldev->desc->pins[pin].drv_data; 674 675 seq_printf(s, " gpio%-2d:", pin + PMIC_GPIO_PHYSICAL_OFFSET); 676 677 val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_EN_CTL); 678 679 if (val < 0 || !(val >> PMIC_GPIO_REG_MASTER_EN_SHIFT)) { 680 seq_puts(s, " ---"); 681 } else { 682 if (pad->input_enabled) { 683 ret = pmic_gpio_read(state, pad, PMIC_MPP_REG_RT_STS); 684 if (ret < 0) 685 return; 686 687 ret &= PMIC_MPP_REG_RT_STS_VAL_MASK; 688 pad->out_value = ret; 689 } 690 /* 691 * For the non-LV/MV subtypes only 2 special functions are 692 * available, offsetting the dtest function values by 2. 693 */ 694 function = pad->function; 695 if (!pad->lv_mv_type && 696 pad->function >= PMIC_GPIO_FUNC_INDEX_FUNC3) 697 function += PMIC_GPIO_FUNC_INDEX_DTEST1 - 698 PMIC_GPIO_FUNC_INDEX_FUNC3; 699 700 if (pad->analog_pass) 701 seq_puts(s, " analog-pass"); 702 else 703 seq_printf(s, " %-4s", 704 pad->output_enabled ? "out" : "in"); 705 seq_printf(s, " %-4s", pad->out_value ? "high" : "low"); 706 seq_printf(s, " %-7s", pmic_gpio_functions[function]); 707 seq_printf(s, " vin-%d", pad->power_source); 708 seq_printf(s, " %-27s", biases[pad->pullup]); 709 seq_printf(s, " %-10s", buffer_types[pad->buffer_type]); 710 seq_printf(s, " %-7s", strengths[pad->strength]); 711 seq_printf(s, " atest-%d", pad->atest); 712 seq_printf(s, " dtest-%d", pad->dtest_buffer); 713 } 714 } 715 716 static const struct pinconf_ops pmic_gpio_pinconf_ops = { 717 .is_generic = true, 718 .pin_config_group_get = pmic_gpio_config_get, 719 .pin_config_group_set = pmic_gpio_config_set, 720 .pin_config_group_dbg_show = pmic_gpio_config_dbg_show, 721 }; 722 pmic_gpio_direction_input(struct gpio_chip * chip,unsigned pin)723 static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned pin) 724 { 725 struct pmic_gpio_state *state = gpiochip_get_data(chip); 726 unsigned long config; 727 728 config = pinconf_to_config_packed(PIN_CONFIG_INPUT_ENABLE, 1); 729 730 return pmic_gpio_config_set(state->ctrl, pin, &config, 1); 731 } 732 pmic_gpio_direction_output(struct gpio_chip * chip,unsigned pin,int val)733 static int pmic_gpio_direction_output(struct gpio_chip *chip, 734 unsigned pin, int val) 735 { 736 struct pmic_gpio_state *state = gpiochip_get_data(chip); 737 unsigned long config; 738 739 config = pinconf_to_config_packed(PIN_CONFIG_OUTPUT, val); 740 741 return pmic_gpio_config_set(state->ctrl, pin, &config, 1); 742 } 743 pmic_gpio_get(struct gpio_chip * chip,unsigned pin)744 static int pmic_gpio_get(struct gpio_chip *chip, unsigned pin) 745 { 746 struct pmic_gpio_state *state = gpiochip_get_data(chip); 747 struct pmic_gpio_pad *pad; 748 int ret; 749 750 pad = state->ctrl->desc->pins[pin].drv_data; 751 752 if (!pad->is_enabled) 753 return -EINVAL; 754 755 if (pad->input_enabled) { 756 ret = pmic_gpio_read(state, pad, PMIC_MPP_REG_RT_STS); 757 if (ret < 0) 758 return ret; 759 760 pad->out_value = ret & PMIC_MPP_REG_RT_STS_VAL_MASK; 761 } 762 763 return !!pad->out_value; 764 } 765 pmic_gpio_set(struct gpio_chip * chip,unsigned pin,int value)766 static void pmic_gpio_set(struct gpio_chip *chip, unsigned pin, int value) 767 { 768 struct pmic_gpio_state *state = gpiochip_get_data(chip); 769 unsigned long config; 770 771 config = pinconf_to_config_packed(PIN_CONFIG_OUTPUT, value); 772 773 pmic_gpio_config_set(state->ctrl, pin, &config, 1); 774 } 775 pmic_gpio_of_xlate(struct gpio_chip * chip,const struct of_phandle_args * gpio_desc,u32 * flags)776 static int pmic_gpio_of_xlate(struct gpio_chip *chip, 777 const struct of_phandle_args *gpio_desc, 778 u32 *flags) 779 { 780 if (chip->of_gpio_n_cells < 2) 781 return -EINVAL; 782 783 if (flags) 784 *flags = gpio_desc->args[1]; 785 786 return gpio_desc->args[0] - PMIC_GPIO_PHYSICAL_OFFSET; 787 } 788 pmic_gpio_dbg_show(struct seq_file * s,struct gpio_chip * chip)789 static void pmic_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) 790 { 791 struct pmic_gpio_state *state = gpiochip_get_data(chip); 792 unsigned i; 793 794 for (i = 0; i < chip->ngpio; i++) { 795 pmic_gpio_config_dbg_show(state->ctrl, s, i); 796 seq_puts(s, "\n"); 797 } 798 } 799 800 static const struct gpio_chip pmic_gpio_gpio_template = { 801 .direction_input = pmic_gpio_direction_input, 802 .direction_output = pmic_gpio_direction_output, 803 .get = pmic_gpio_get, 804 .set = pmic_gpio_set, 805 .request = gpiochip_generic_request, 806 .free = gpiochip_generic_free, 807 .of_xlate = pmic_gpio_of_xlate, 808 .dbg_show = pmic_gpio_dbg_show, 809 }; 810 pmic_gpio_populate(struct pmic_gpio_state * state,struct pmic_gpio_pad * pad)811 static int pmic_gpio_populate(struct pmic_gpio_state *state, 812 struct pmic_gpio_pad *pad) 813 { 814 int type, subtype, val, dir; 815 816 type = pmic_gpio_read(state, pad, PMIC_GPIO_REG_TYPE); 817 if (type < 0) 818 return type; 819 820 if (type != PMIC_GPIO_TYPE) { 821 dev_err(state->dev, "incorrect block type 0x%x at 0x%x\n", 822 type, pad->base); 823 return -ENODEV; 824 } 825 826 subtype = pmic_gpio_read(state, pad, PMIC_GPIO_REG_SUBTYPE); 827 if (subtype < 0) 828 return subtype; 829 830 switch (subtype) { 831 case PMIC_GPIO_SUBTYPE_GPIO_4CH: 832 pad->have_buffer = true; 833 fallthrough; 834 case PMIC_GPIO_SUBTYPE_GPIOC_4CH: 835 pad->num_sources = 4; 836 break; 837 case PMIC_GPIO_SUBTYPE_GPIO_8CH: 838 pad->have_buffer = true; 839 fallthrough; 840 case PMIC_GPIO_SUBTYPE_GPIOC_8CH: 841 pad->num_sources = 8; 842 break; 843 case PMIC_GPIO_SUBTYPE_GPIO_LV: 844 pad->num_sources = 1; 845 pad->have_buffer = true; 846 pad->lv_mv_type = true; 847 break; 848 case PMIC_GPIO_SUBTYPE_GPIO_MV: 849 pad->num_sources = 2; 850 pad->have_buffer = true; 851 pad->lv_mv_type = true; 852 break; 853 case PMIC_GPIO_SUBTYPE_GPIO_LV_VIN2: 854 pad->num_sources = 2; 855 pad->have_buffer = true; 856 pad->lv_mv_type = true; 857 break; 858 case PMIC_GPIO_SUBTYPE_GPIO_MV_VIN3: 859 pad->num_sources = 3; 860 pad->have_buffer = true; 861 pad->lv_mv_type = true; 862 break; 863 default: 864 dev_err(state->dev, "unknown GPIO type 0x%x\n", subtype); 865 return -ENODEV; 866 } 867 868 if (pad->lv_mv_type) { 869 val = pmic_gpio_read(state, pad, 870 PMIC_GPIO_REG_LV_MV_DIG_OUT_SOURCE_CTL); 871 if (val < 0) 872 return val; 873 874 pad->out_value = !!(val & PMIC_GPIO_LV_MV_OUTPUT_INVERT); 875 pad->function = val & PMIC_GPIO_LV_MV_OUTPUT_SOURCE_SEL_MASK; 876 877 val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_MODE_CTL); 878 if (val < 0) 879 return val; 880 881 dir = val & PMIC_GPIO_REG_LV_MV_MODE_DIR_MASK; 882 } else { 883 val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_MODE_CTL); 884 if (val < 0) 885 return val; 886 887 pad->out_value = val & PMIC_GPIO_REG_MODE_VALUE_SHIFT; 888 889 dir = val >> PMIC_GPIO_REG_MODE_DIR_SHIFT; 890 dir &= PMIC_GPIO_REG_MODE_DIR_MASK; 891 pad->function = val >> PMIC_GPIO_REG_MODE_FUNCTION_SHIFT; 892 pad->function &= PMIC_GPIO_REG_MODE_FUNCTION_MASK; 893 } 894 895 switch (dir) { 896 case PMIC_GPIO_MODE_DIGITAL_INPUT: 897 pad->input_enabled = true; 898 pad->output_enabled = false; 899 break; 900 case PMIC_GPIO_MODE_DIGITAL_OUTPUT: 901 pad->input_enabled = false; 902 pad->output_enabled = true; 903 break; 904 case PMIC_GPIO_MODE_DIGITAL_INPUT_OUTPUT: 905 pad->input_enabled = true; 906 pad->output_enabled = true; 907 break; 908 case PMIC_GPIO_MODE_ANALOG_PASS_THRU: 909 if (!pad->lv_mv_type) 910 return -ENODEV; 911 pad->analog_pass = true; 912 break; 913 default: 914 dev_err(state->dev, "unknown GPIO direction\n"); 915 return -ENODEV; 916 } 917 918 val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_DIG_VIN_CTL); 919 if (val < 0) 920 return val; 921 922 pad->power_source = val >> PMIC_GPIO_REG_VIN_SHIFT; 923 pad->power_source &= PMIC_GPIO_REG_VIN_MASK; 924 925 val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_DIG_PULL_CTL); 926 if (val < 0) 927 return val; 928 929 pad->pullup = val >> PMIC_GPIO_REG_PULL_SHIFT; 930 pad->pullup &= PMIC_GPIO_REG_PULL_MASK; 931 932 val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_DIG_IN_CTL); 933 if (val < 0) 934 return val; 935 936 if (pad->lv_mv_type && (val & PMIC_GPIO_LV_MV_DIG_IN_DTEST_EN)) 937 pad->dtest_buffer = 938 (val & PMIC_GPIO_LV_MV_DIG_IN_DTEST_SEL_MASK) + 1; 939 else if (!pad->lv_mv_type) 940 pad->dtest_buffer = ffs(val); 941 else 942 pad->dtest_buffer = 0; 943 944 val = pmic_gpio_read(state, pad, PMIC_GPIO_REG_DIG_OUT_CTL); 945 if (val < 0) 946 return val; 947 948 pad->strength = val >> PMIC_GPIO_REG_OUT_STRENGTH_SHIFT; 949 pad->strength &= PMIC_GPIO_REG_OUT_STRENGTH_MASK; 950 951 pad->buffer_type = val >> PMIC_GPIO_REG_OUT_TYPE_SHIFT; 952 pad->buffer_type &= PMIC_GPIO_REG_OUT_TYPE_MASK; 953 954 if (pad->lv_mv_type) { 955 val = pmic_gpio_read(state, pad, 956 PMIC_GPIO_REG_LV_MV_ANA_PASS_THRU_SEL); 957 if (val < 0) 958 return val; 959 pad->atest = (val & PMIC_GPIO_LV_MV_ANA_MUX_SEL_MASK) + 1; 960 } 961 962 /* Pin could be disabled with PIN_CONFIG_BIAS_HIGH_IMPEDANCE */ 963 pad->is_enabled = true; 964 return 0; 965 } 966 pmic_gpio_domain_translate(struct irq_domain * domain,struct irq_fwspec * fwspec,unsigned long * hwirq,unsigned int * type)967 static int pmic_gpio_domain_translate(struct irq_domain *domain, 968 struct irq_fwspec *fwspec, 969 unsigned long *hwirq, 970 unsigned int *type) 971 { 972 struct pmic_gpio_state *state = container_of(domain->host_data, 973 struct pmic_gpio_state, 974 chip); 975 976 if (fwspec->param_count != 2 || 977 fwspec->param[0] < 1 || fwspec->param[0] > state->chip.ngpio) 978 return -EINVAL; 979 980 *hwirq = fwspec->param[0] - PMIC_GPIO_PHYSICAL_OFFSET; 981 *type = fwspec->param[1]; 982 983 return 0; 984 } 985 pmic_gpio_child_offset_to_irq(struct gpio_chip * chip,unsigned int offset)986 static unsigned int pmic_gpio_child_offset_to_irq(struct gpio_chip *chip, 987 unsigned int offset) 988 { 989 return offset + PMIC_GPIO_PHYSICAL_OFFSET; 990 } 991 pmic_gpio_child_to_parent_hwirq(struct gpio_chip * chip,unsigned int child_hwirq,unsigned int child_type,unsigned int * parent_hwirq,unsigned int * parent_type)992 static int pmic_gpio_child_to_parent_hwirq(struct gpio_chip *chip, 993 unsigned int child_hwirq, 994 unsigned int child_type, 995 unsigned int *parent_hwirq, 996 unsigned int *parent_type) 997 { 998 struct pmic_gpio_state *state = gpiochip_get_data(chip); 999 1000 *parent_hwirq = child_hwirq + state->pid_base; 1001 *parent_type = child_type; 1002 1003 return 0; 1004 } 1005 pmic_gpio_populate_parent_fwspec(struct gpio_chip * chip,union gpio_irq_fwspec * gfwspec,unsigned int parent_hwirq,unsigned int parent_type)1006 static int pmic_gpio_populate_parent_fwspec(struct gpio_chip *chip, 1007 union gpio_irq_fwspec *gfwspec, 1008 unsigned int parent_hwirq, 1009 unsigned int parent_type) 1010 { 1011 struct pmic_gpio_state *state = gpiochip_get_data(chip); 1012 struct irq_fwspec *fwspec = &gfwspec->fwspec; 1013 1014 fwspec->fwnode = chip->irq.parent_domain->fwnode; 1015 1016 fwspec->param_count = 4; 1017 fwspec->param[0] = state->usid; 1018 fwspec->param[1] = parent_hwirq; 1019 /* param[2] must be left as 0 */ 1020 fwspec->param[3] = parent_type; 1021 1022 return 0; 1023 } 1024 pmic_gpio_irq_mask(struct irq_data * data)1025 static void pmic_gpio_irq_mask(struct irq_data *data) 1026 { 1027 struct gpio_chip *gc = irq_data_get_irq_chip_data(data); 1028 1029 irq_chip_mask_parent(data); 1030 gpiochip_disable_irq(gc, data->hwirq); 1031 } 1032 pmic_gpio_irq_unmask(struct irq_data * data)1033 static void pmic_gpio_irq_unmask(struct irq_data *data) 1034 { 1035 struct gpio_chip *gc = irq_data_get_irq_chip_data(data); 1036 1037 gpiochip_enable_irq(gc, data->hwirq); 1038 irq_chip_unmask_parent(data); 1039 } 1040 1041 static const struct irq_chip spmi_gpio_irq_chip = { 1042 .name = "spmi-gpio", 1043 .irq_ack = irq_chip_ack_parent, 1044 .irq_mask = pmic_gpio_irq_mask, 1045 .irq_unmask = pmic_gpio_irq_unmask, 1046 .irq_set_type = irq_chip_set_type_parent, 1047 .irq_set_wake = irq_chip_set_wake_parent, 1048 .flags = IRQCHIP_IMMUTABLE | IRQCHIP_MASK_ON_SUSPEND, 1049 GPIOCHIP_IRQ_RESOURCE_HELPERS, 1050 }; 1051 pmic_gpio_probe(struct platform_device * pdev)1052 static int pmic_gpio_probe(struct platform_device *pdev) 1053 { 1054 struct irq_domain *parent_domain; 1055 struct device_node *parent_node; 1056 struct device *dev = &pdev->dev; 1057 struct pinctrl_pin_desc *pindesc; 1058 struct pinctrl_desc *pctrldesc; 1059 struct pmic_gpio_pad *pad, *pads; 1060 struct pmic_gpio_state *state; 1061 struct gpio_irq_chip *girq; 1062 const struct spmi_device *parent_spmi_dev; 1063 int ret, npins, i; 1064 u32 reg; 1065 1066 ret = of_property_read_u32(dev->of_node, "reg", ®); 1067 if (ret < 0) { 1068 dev_err(dev, "missing base address"); 1069 return ret; 1070 } 1071 1072 npins = (uintptr_t) device_get_match_data(&pdev->dev); 1073 1074 state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL); 1075 if (!state) 1076 return -ENOMEM; 1077 1078 platform_set_drvdata(pdev, state); 1079 1080 state->dev = &pdev->dev; 1081 state->map = dev_get_regmap(dev->parent, NULL); 1082 parent_spmi_dev = to_spmi_device(dev->parent); 1083 state->usid = parent_spmi_dev->usid; 1084 state->pid_base = reg >> 8; 1085 1086 pindesc = devm_kcalloc(dev, npins, sizeof(*pindesc), GFP_KERNEL); 1087 if (!pindesc) 1088 return -ENOMEM; 1089 1090 pads = devm_kcalloc(dev, npins, sizeof(*pads), GFP_KERNEL); 1091 if (!pads) 1092 return -ENOMEM; 1093 1094 pctrldesc = devm_kzalloc(dev, sizeof(*pctrldesc), GFP_KERNEL); 1095 if (!pctrldesc) 1096 return -ENOMEM; 1097 1098 pctrldesc->pctlops = &pmic_gpio_pinctrl_ops; 1099 pctrldesc->pmxops = &pmic_gpio_pinmux_ops; 1100 pctrldesc->confops = &pmic_gpio_pinconf_ops; 1101 pctrldesc->owner = THIS_MODULE; 1102 pctrldesc->name = dev_name(dev); 1103 pctrldesc->pins = pindesc; 1104 pctrldesc->npins = npins; 1105 pctrldesc->num_custom_params = ARRAY_SIZE(pmic_gpio_bindings); 1106 pctrldesc->custom_params = pmic_gpio_bindings; 1107 #ifdef CONFIG_DEBUG_FS 1108 pctrldesc->custom_conf_items = pmic_conf_items; 1109 #endif 1110 1111 for (i = 0; i < npins; i++, pindesc++) { 1112 pad = &pads[i]; 1113 pindesc->drv_data = pad; 1114 pindesc->number = i; 1115 pindesc->name = pmic_gpio_groups[i]; 1116 1117 pad->base = reg + i * PMIC_GPIO_ADDRESS_RANGE; 1118 1119 ret = pmic_gpio_populate(state, pad); 1120 if (ret < 0) 1121 return ret; 1122 } 1123 1124 state->chip = pmic_gpio_gpio_template; 1125 state->chip.parent = dev; 1126 state->chip.base = -1; 1127 state->chip.ngpio = npins; 1128 state->chip.label = dev_name(dev); 1129 state->chip.of_gpio_n_cells = 2; 1130 state->chip.can_sleep = false; 1131 1132 state->ctrl = devm_pinctrl_register(dev, pctrldesc, state); 1133 if (IS_ERR(state->ctrl)) 1134 return PTR_ERR(state->ctrl); 1135 1136 parent_node = of_irq_find_parent(state->dev->of_node); 1137 if (!parent_node) 1138 return -ENXIO; 1139 1140 parent_domain = irq_find_host(parent_node); 1141 of_node_put(parent_node); 1142 if (!parent_domain) 1143 return -ENXIO; 1144 1145 girq = &state->chip.irq; 1146 gpio_irq_chip_set_chip(girq, &spmi_gpio_irq_chip); 1147 girq->default_type = IRQ_TYPE_NONE; 1148 girq->handler = handle_level_irq; 1149 girq->fwnode = dev_fwnode(state->dev); 1150 girq->parent_domain = parent_domain; 1151 girq->child_to_parent_hwirq = pmic_gpio_child_to_parent_hwirq; 1152 girq->populate_parent_alloc_arg = pmic_gpio_populate_parent_fwspec; 1153 girq->child_offset_to_irq = pmic_gpio_child_offset_to_irq; 1154 girq->child_irq_domain_ops.translate = pmic_gpio_domain_translate; 1155 1156 ret = gpiochip_add_data(&state->chip, state); 1157 if (ret) { 1158 dev_err(state->dev, "can't add gpio chip\n"); 1159 return ret; 1160 } 1161 1162 /* 1163 * For DeviceTree-supported systems, the gpio core checks the 1164 * pinctrl's device node for the "gpio-ranges" property. 1165 * If it is present, it takes care of adding the pin ranges 1166 * for the driver. In this case the driver can skip ahead. 1167 * 1168 * In order to remain compatible with older, existing DeviceTree 1169 * files which don't set the "gpio-ranges" property or systems that 1170 * utilize ACPI the driver has to call gpiochip_add_pin_range(). 1171 */ 1172 if (!of_property_read_bool(dev->of_node, "gpio-ranges")) { 1173 ret = gpiochip_add_pin_range(&state->chip, dev_name(dev), 0, 0, 1174 npins); 1175 if (ret) { 1176 dev_err(dev, "failed to add pin range\n"); 1177 goto err_range; 1178 } 1179 } 1180 1181 return 0; 1182 1183 err_range: 1184 gpiochip_remove(&state->chip); 1185 return ret; 1186 } 1187 pmic_gpio_remove(struct platform_device * pdev)1188 static int pmic_gpio_remove(struct platform_device *pdev) 1189 { 1190 struct pmic_gpio_state *state = platform_get_drvdata(pdev); 1191 1192 gpiochip_remove(&state->chip); 1193 return 0; 1194 } 1195 1196 static const struct of_device_id pmic_gpio_of_match[] = { 1197 { .compatible = "qcom,pm2250-gpio", .data = (void *) 10 }, 1198 /* pm660 has 13 GPIOs with holes on 1, 5, 6, 7, 8 and 10 */ 1199 { .compatible = "qcom,pm660-gpio", .data = (void *) 13 }, 1200 /* pm660l has 12 GPIOs with holes on 1, 2, 10, 11 and 12 */ 1201 { .compatible = "qcom,pm660l-gpio", .data = (void *) 12 }, 1202 { .compatible = "qcom,pm6125-gpio", .data = (void *) 9 }, 1203 { .compatible = "qcom,pm6150-gpio", .data = (void *) 10 }, 1204 { .compatible = "qcom,pm6150l-gpio", .data = (void *) 12 }, 1205 { .compatible = "qcom,pm6350-gpio", .data = (void *) 9 }, 1206 { .compatible = "qcom,pm7250b-gpio", .data = (void *) 12 }, 1207 { .compatible = "qcom,pm7325-gpio", .data = (void *) 10 }, 1208 { .compatible = "qcom,pm7550ba-gpio", .data = (void *) 8}, 1209 { .compatible = "qcom,pm8005-gpio", .data = (void *) 4 }, 1210 { .compatible = "qcom,pm8019-gpio", .data = (void *) 6 }, 1211 /* pm8150 has 10 GPIOs with holes on 2, 5, 7 and 8 */ 1212 { .compatible = "qcom,pm8150-gpio", .data = (void *) 10 }, 1213 { .compatible = "qcom,pmc8180-gpio", .data = (void *) 10 }, 1214 /* pm8150b has 12 GPIOs with holes on 3, r and 7 */ 1215 { .compatible = "qcom,pm8150b-gpio", .data = (void *) 12 }, 1216 /* pm8150l has 12 GPIOs with holes on 7 */ 1217 { .compatible = "qcom,pm8150l-gpio", .data = (void *) 12 }, 1218 { .compatible = "qcom,pmc8180c-gpio", .data = (void *) 12 }, 1219 { .compatible = "qcom,pm8226-gpio", .data = (void *) 8 }, 1220 { .compatible = "qcom,pm8350-gpio", .data = (void *) 10 }, 1221 { .compatible = "qcom,pm8350b-gpio", .data = (void *) 8 }, 1222 { .compatible = "qcom,pm8350c-gpio", .data = (void *) 9 }, 1223 { .compatible = "qcom,pm8450-gpio", .data = (void *) 4 }, 1224 { .compatible = "qcom,pm8550-gpio", .data = (void *) 12 }, 1225 { .compatible = "qcom,pm8550b-gpio", .data = (void *) 12 }, 1226 { .compatible = "qcom,pm8550ve-gpio", .data = (void *) 8 }, 1227 { .compatible = "qcom,pm8550vs-gpio", .data = (void *) 6 }, 1228 { .compatible = "qcom,pm8916-gpio", .data = (void *) 4 }, 1229 /* pm8937 has 8 GPIOs with holes on 3, 4 and 6 */ 1230 { .compatible = "qcom,pm8937-gpio", .data = (void *) 8 }, 1231 { .compatible = "qcom,pm8941-gpio", .data = (void *) 36 }, 1232 /* pm8950 has 8 GPIOs with holes on 3 */ 1233 { .compatible = "qcom,pm8950-gpio", .data = (void *) 8 }, 1234 /* pm8953 has 8 GPIOs with holes on 3 and 6 */ 1235 { .compatible = "qcom,pm8953-gpio", .data = (void *) 8 }, 1236 { .compatible = "qcom,pm8994-gpio", .data = (void *) 22 }, 1237 { .compatible = "qcom,pm8998-gpio", .data = (void *) 26 }, 1238 { .compatible = "qcom,pma8084-gpio", .data = (void *) 22 }, 1239 { .compatible = "qcom,pmi632-gpio", .data = (void *) 8 }, 1240 { .compatible = "qcom,pmi8950-gpio", .data = (void *) 2 }, 1241 { .compatible = "qcom,pmi8994-gpio", .data = (void *) 10 }, 1242 { .compatible = "qcom,pmi8998-gpio", .data = (void *) 14 }, 1243 { .compatible = "qcom,pmk8350-gpio", .data = (void *) 4 }, 1244 { .compatible = "qcom,pmk8550-gpio", .data = (void *) 6 }, 1245 { .compatible = "qcom,pmm8155au-gpio", .data = (void *) 10 }, 1246 { .compatible = "qcom,pmm8654au-gpio", .data = (void *) 12 }, 1247 /* pmp8074 has 12 GPIOs with holes on 1 and 12 */ 1248 { .compatible = "qcom,pmp8074-gpio", .data = (void *) 12 }, 1249 { .compatible = "qcom,pmr735a-gpio", .data = (void *) 4 }, 1250 { .compatible = "qcom,pmr735b-gpio", .data = (void *) 4 }, 1251 { .compatible = "qcom,pmr735d-gpio", .data = (void *) 2 }, 1252 /* pms405 has 12 GPIOs with holes on 1, 9, and 10 */ 1253 { .compatible = "qcom,pms405-gpio", .data = (void *) 12 }, 1254 /* pmx55 has 11 GPIOs with holes on 3, 7, 10, 11 */ 1255 { .compatible = "qcom,pmx55-gpio", .data = (void *) 11 }, 1256 { .compatible = "qcom,pmx65-gpio", .data = (void *) 16 }, 1257 { .compatible = "qcom,pmx75-gpio", .data = (void *) 16 }, 1258 { }, 1259 }; 1260 1261 MODULE_DEVICE_TABLE(of, pmic_gpio_of_match); 1262 1263 static struct platform_driver pmic_gpio_driver = { 1264 .driver = { 1265 .name = "qcom-spmi-gpio", 1266 .of_match_table = pmic_gpio_of_match, 1267 }, 1268 .probe = pmic_gpio_probe, 1269 .remove = pmic_gpio_remove, 1270 }; 1271 1272 module_platform_driver(pmic_gpio_driver); 1273 1274 MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>"); 1275 MODULE_DESCRIPTION("Qualcomm SPMI PMIC GPIO pin control driver"); 1276 MODULE_ALIAS("platform:qcom-spmi-gpio"); 1277 MODULE_LICENSE("GPL v2"); 1278