1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2011, Code Aurora Forum. All rights reserved. 4 */ 5 6 #define pr_fmt(fmt) "%s: " fmt, __func__ 7 8 #include <linux/kernel.h> 9 #include <linux/interrupt.h> 10 #include <linux/irqchip/chained_irq.h> 11 #include <linux/irq.h> 12 #include <linux/irqdomain.h> 13 #include <linux/module.h> 14 #include <linux/platform_device.h> 15 #include <linux/slab.h> 16 #include <linux/err.h> 17 #include <linux/ssbi.h> 18 #include <linux/regmap.h> 19 #include <linux/of_platform.h> 20 #include <linux/mfd/core.h> 21 22 #define SSBI_REG_ADDR_IRQ_BASE 0x1BB 23 24 #define SSBI_REG_ADDR_IRQ_ROOT (SSBI_REG_ADDR_IRQ_BASE + 0) 25 #define SSBI_REG_ADDR_IRQ_M_STATUS1 (SSBI_REG_ADDR_IRQ_BASE + 1) 26 #define SSBI_REG_ADDR_IRQ_M_STATUS2 (SSBI_REG_ADDR_IRQ_BASE + 2) 27 #define SSBI_REG_ADDR_IRQ_M_STATUS3 (SSBI_REG_ADDR_IRQ_BASE + 3) 28 #define SSBI_REG_ADDR_IRQ_M_STATUS4 (SSBI_REG_ADDR_IRQ_BASE + 4) 29 #define SSBI_REG_ADDR_IRQ_BLK_SEL (SSBI_REG_ADDR_IRQ_BASE + 5) 30 #define SSBI_REG_ADDR_IRQ_IT_STATUS (SSBI_REG_ADDR_IRQ_BASE + 6) 31 #define SSBI_REG_ADDR_IRQ_CONFIG (SSBI_REG_ADDR_IRQ_BASE + 7) 32 #define SSBI_REG_ADDR_IRQ_RT_STATUS (SSBI_REG_ADDR_IRQ_BASE + 8) 33 34 #define PM8821_SSBI_REG_ADDR_IRQ_BASE 0x100 35 #define PM8821_SSBI_REG_ADDR_IRQ_MASTER0 (PM8821_SSBI_REG_ADDR_IRQ_BASE + 0x30) 36 #define PM8821_SSBI_REG_ADDR_IRQ_MASTER1 (PM8821_SSBI_REG_ADDR_IRQ_BASE + 0xb0) 37 #define PM8821_SSBI_REG(m, b, offset) \ 38 ((m == 0) ? \ 39 (PM8821_SSBI_REG_ADDR_IRQ_MASTER0 + b + offset) : \ 40 (PM8821_SSBI_REG_ADDR_IRQ_MASTER1 + b + offset)) 41 #define PM8821_SSBI_ADDR_IRQ_ROOT(m, b) PM8821_SSBI_REG(m, b, 0x0) 42 #define PM8821_SSBI_ADDR_IRQ_CLEAR(m, b) PM8821_SSBI_REG(m, b, 0x01) 43 #define PM8821_SSBI_ADDR_IRQ_MASK(m, b) PM8821_SSBI_REG(m, b, 0x08) 44 #define PM8821_SSBI_ADDR_IRQ_RT_STATUS(m, b) PM8821_SSBI_REG(m, b, 0x0f) 45 46 #define PM8821_BLOCKS_PER_MASTER 7 47 48 #define PM_IRQF_LVL_SEL 0x01 /* level select */ 49 #define PM_IRQF_MASK_FE 0x02 /* mask falling edge */ 50 #define PM_IRQF_MASK_RE 0x04 /* mask rising edge */ 51 #define PM_IRQF_CLR 0x08 /* clear interrupt */ 52 #define PM_IRQF_BITS_MASK 0x70 53 #define PM_IRQF_BITS_SHIFT 4 54 #define PM_IRQF_WRITE 0x80 55 56 #define PM_IRQF_MASK_ALL (PM_IRQF_MASK_FE | \ 57 PM_IRQF_MASK_RE) 58 59 #define REG_HWREV 0x002 /* PMIC4 revision */ 60 #define REG_HWREV_2 0x0E8 /* PMIC4 revision 2 */ 61 62 #define PM8XXX_NR_IRQS 256 63 #define PM8821_NR_IRQS 112 64 65 struct pm_irq_data { 66 int num_irqs; 67 struct irq_chip *irq_chip; 68 void (*irq_handler)(struct irq_desc *desc); 69 }; 70 71 struct pm_irq_chip { 72 struct regmap *regmap; 73 spinlock_t pm_irq_lock; 74 struct irq_domain *irqdomain; 75 unsigned int num_blocks; 76 unsigned int num_masters; 77 const struct pm_irq_data *pm_irq_data; 78 /* MUST BE AT THE END OF THIS STRUCT */ 79 u8 config[0]; 80 }; 81 82 static int pm8xxx_read_block_irq(struct pm_irq_chip *chip, unsigned int bp, 83 unsigned int *ip) 84 { 85 int rc; 86 87 spin_lock(&chip->pm_irq_lock); 88 rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, bp); 89 if (rc) { 90 pr_err("Failed Selecting Block %d rc=%d\n", bp, rc); 91 goto bail; 92 } 93 94 rc = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_IT_STATUS, ip); 95 if (rc) 96 pr_err("Failed Reading Status rc=%d\n", rc); 97 bail: 98 spin_unlock(&chip->pm_irq_lock); 99 return rc; 100 } 101 102 static int 103 pm8xxx_config_irq(struct pm_irq_chip *chip, unsigned int bp, unsigned int cp) 104 { 105 int rc; 106 107 spin_lock(&chip->pm_irq_lock); 108 rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, bp); 109 if (rc) { 110 pr_err("Failed Selecting Block %d rc=%d\n", bp, rc); 111 goto bail; 112 } 113 114 cp |= PM_IRQF_WRITE; 115 rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_CONFIG, cp); 116 if (rc) 117 pr_err("Failed Configuring IRQ rc=%d\n", rc); 118 bail: 119 spin_unlock(&chip->pm_irq_lock); 120 return rc; 121 } 122 123 static int pm8xxx_irq_block_handler(struct pm_irq_chip *chip, int block) 124 { 125 int pmirq, irq, i, ret = 0; 126 unsigned int bits; 127 128 ret = pm8xxx_read_block_irq(chip, block, &bits); 129 if (ret) { 130 pr_err("Failed reading %d block ret=%d", block, ret); 131 return ret; 132 } 133 if (!bits) { 134 pr_err("block bit set in master but no irqs: %d", block); 135 return 0; 136 } 137 138 /* Check IRQ bits */ 139 for (i = 0; i < 8; i++) { 140 if (bits & (1 << i)) { 141 pmirq = block * 8 + i; 142 irq = irq_find_mapping(chip->irqdomain, pmirq); 143 generic_handle_irq(irq); 144 } 145 } 146 return 0; 147 } 148 149 static int pm8xxx_irq_master_handler(struct pm_irq_chip *chip, int master) 150 { 151 unsigned int blockbits; 152 int block_number, i, ret = 0; 153 154 ret = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_M_STATUS1 + master, 155 &blockbits); 156 if (ret) { 157 pr_err("Failed to read master %d ret=%d\n", master, ret); 158 return ret; 159 } 160 if (!blockbits) { 161 pr_err("master bit set in root but no blocks: %d", master); 162 return 0; 163 } 164 165 for (i = 0; i < 8; i++) 166 if (blockbits & (1 << i)) { 167 block_number = master * 8 + i; /* block # */ 168 ret |= pm8xxx_irq_block_handler(chip, block_number); 169 } 170 return ret; 171 } 172 173 static void pm8xxx_irq_handler(struct irq_desc *desc) 174 { 175 struct pm_irq_chip *chip = irq_desc_get_handler_data(desc); 176 struct irq_chip *irq_chip = irq_desc_get_chip(desc); 177 unsigned int root; 178 int i, ret, masters = 0; 179 180 chained_irq_enter(irq_chip, desc); 181 182 ret = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_ROOT, &root); 183 if (ret) { 184 pr_err("Can't read root status ret=%d\n", ret); 185 return; 186 } 187 188 /* on pm8xxx series masters start from bit 1 of the root */ 189 masters = root >> 1; 190 191 /* Read allowed masters for blocks. */ 192 for (i = 0; i < chip->num_masters; i++) 193 if (masters & (1 << i)) 194 pm8xxx_irq_master_handler(chip, i); 195 196 chained_irq_exit(irq_chip, desc); 197 } 198 199 static void pm8821_irq_block_handler(struct pm_irq_chip *chip, 200 int master, int block) 201 { 202 int pmirq, irq, i, ret; 203 unsigned int bits; 204 205 ret = regmap_read(chip->regmap, 206 PM8821_SSBI_ADDR_IRQ_ROOT(master, block), &bits); 207 if (ret) { 208 pr_err("Reading block %d failed ret=%d", block, ret); 209 return; 210 } 211 212 /* Convert block offset to global block number */ 213 block += (master * PM8821_BLOCKS_PER_MASTER) - 1; 214 215 /* Check IRQ bits */ 216 for (i = 0; i < 8; i++) { 217 if (bits & BIT(i)) { 218 pmirq = block * 8 + i; 219 irq = irq_find_mapping(chip->irqdomain, pmirq); 220 generic_handle_irq(irq); 221 } 222 } 223 } 224 225 static inline void pm8821_irq_master_handler(struct pm_irq_chip *chip, 226 int master, u8 master_val) 227 { 228 int block; 229 230 for (block = 1; block < 8; block++) 231 if (master_val & BIT(block)) 232 pm8821_irq_block_handler(chip, master, block); 233 } 234 235 static void pm8821_irq_handler(struct irq_desc *desc) 236 { 237 struct pm_irq_chip *chip = irq_desc_get_handler_data(desc); 238 struct irq_chip *irq_chip = irq_desc_get_chip(desc); 239 unsigned int master; 240 int ret; 241 242 chained_irq_enter(irq_chip, desc); 243 ret = regmap_read(chip->regmap, 244 PM8821_SSBI_REG_ADDR_IRQ_MASTER0, &master); 245 if (ret) { 246 pr_err("Failed to read master 0 ret=%d\n", ret); 247 goto done; 248 } 249 250 /* bits 1 through 7 marks the first 7 blocks in master 0 */ 251 if (master & GENMASK(7, 1)) 252 pm8821_irq_master_handler(chip, 0, master); 253 254 /* bit 0 marks if master 1 contains any bits */ 255 if (!(master & BIT(0))) 256 goto done; 257 258 ret = regmap_read(chip->regmap, 259 PM8821_SSBI_REG_ADDR_IRQ_MASTER1, &master); 260 if (ret) { 261 pr_err("Failed to read master 1 ret=%d\n", ret); 262 goto done; 263 } 264 265 pm8821_irq_master_handler(chip, 1, master); 266 267 done: 268 chained_irq_exit(irq_chip, desc); 269 } 270 271 static void pm8xxx_irq_mask_ack(struct irq_data *d) 272 { 273 struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); 274 unsigned int pmirq = irqd_to_hwirq(d); 275 u8 block, config; 276 277 block = pmirq / 8; 278 279 config = chip->config[pmirq] | PM_IRQF_MASK_ALL | PM_IRQF_CLR; 280 pm8xxx_config_irq(chip, block, config); 281 } 282 283 static void pm8xxx_irq_unmask(struct irq_data *d) 284 { 285 struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); 286 unsigned int pmirq = irqd_to_hwirq(d); 287 u8 block, config; 288 289 block = pmirq / 8; 290 291 config = chip->config[pmirq]; 292 pm8xxx_config_irq(chip, block, config); 293 } 294 295 static int pm8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type) 296 { 297 struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); 298 unsigned int pmirq = irqd_to_hwirq(d); 299 int irq_bit; 300 u8 block, config; 301 302 block = pmirq / 8; 303 irq_bit = pmirq % 8; 304 305 chip->config[pmirq] = (irq_bit << PM_IRQF_BITS_SHIFT) 306 | PM_IRQF_MASK_ALL; 307 if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) { 308 if (flow_type & IRQF_TRIGGER_RISING) 309 chip->config[pmirq] &= ~PM_IRQF_MASK_RE; 310 if (flow_type & IRQF_TRIGGER_FALLING) 311 chip->config[pmirq] &= ~PM_IRQF_MASK_FE; 312 } else { 313 chip->config[pmirq] |= PM_IRQF_LVL_SEL; 314 315 if (flow_type & IRQF_TRIGGER_HIGH) 316 chip->config[pmirq] &= ~PM_IRQF_MASK_RE; 317 else 318 chip->config[pmirq] &= ~PM_IRQF_MASK_FE; 319 } 320 321 config = chip->config[pmirq] | PM_IRQF_CLR; 322 return pm8xxx_config_irq(chip, block, config); 323 } 324 325 static int pm8xxx_irq_get_irqchip_state(struct irq_data *d, 326 enum irqchip_irq_state which, 327 bool *state) 328 { 329 struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); 330 unsigned int pmirq = irqd_to_hwirq(d); 331 unsigned int bits; 332 int irq_bit; 333 u8 block; 334 int rc; 335 336 if (which != IRQCHIP_STATE_LINE_LEVEL) 337 return -EINVAL; 338 339 block = pmirq / 8; 340 irq_bit = pmirq % 8; 341 342 spin_lock(&chip->pm_irq_lock); 343 rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, block); 344 if (rc) { 345 pr_err("Failed Selecting Block %d rc=%d\n", block, rc); 346 goto bail; 347 } 348 349 rc = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_RT_STATUS, &bits); 350 if (rc) { 351 pr_err("Failed Reading Status rc=%d\n", rc); 352 goto bail; 353 } 354 355 *state = !!(bits & BIT(irq_bit)); 356 bail: 357 spin_unlock(&chip->pm_irq_lock); 358 359 return rc; 360 } 361 362 static struct irq_chip pm8xxx_irq_chip = { 363 .name = "pm8xxx", 364 .irq_mask_ack = pm8xxx_irq_mask_ack, 365 .irq_unmask = pm8xxx_irq_unmask, 366 .irq_set_type = pm8xxx_irq_set_type, 367 .irq_get_irqchip_state = pm8xxx_irq_get_irqchip_state, 368 .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE, 369 }; 370 371 static void pm8xxx_irq_domain_map(struct pm_irq_chip *chip, 372 struct irq_domain *domain, unsigned int irq, 373 irq_hw_number_t hwirq, unsigned int type) 374 { 375 irq_domain_set_info(domain, irq, hwirq, chip->pm_irq_data->irq_chip, 376 chip, handle_level_irq, NULL, NULL); 377 irq_set_noprobe(irq); 378 } 379 380 static int pm8xxx_irq_domain_alloc(struct irq_domain *domain, unsigned int virq, 381 unsigned int nr_irqs, void *data) 382 { 383 struct pm_irq_chip *chip = domain->host_data; 384 struct irq_fwspec *fwspec = data; 385 irq_hw_number_t hwirq; 386 unsigned int type; 387 int ret, i; 388 389 ret = irq_domain_translate_twocell(domain, fwspec, &hwirq, &type); 390 if (ret) 391 return ret; 392 393 for (i = 0; i < nr_irqs; i++) 394 pm8xxx_irq_domain_map(chip, domain, virq + i, hwirq + i, type); 395 396 return 0; 397 } 398 399 static const struct irq_domain_ops pm8xxx_irq_domain_ops = { 400 .alloc = pm8xxx_irq_domain_alloc, 401 .free = irq_domain_free_irqs_common, 402 .translate = irq_domain_translate_twocell, 403 }; 404 405 static void pm8821_irq_mask_ack(struct irq_data *d) 406 { 407 struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); 408 unsigned int pmirq = irqd_to_hwirq(d); 409 u8 block, master; 410 int irq_bit, rc; 411 412 block = pmirq / 8; 413 master = block / PM8821_BLOCKS_PER_MASTER; 414 irq_bit = pmirq % 8; 415 block %= PM8821_BLOCKS_PER_MASTER; 416 417 rc = regmap_update_bits(chip->regmap, 418 PM8821_SSBI_ADDR_IRQ_MASK(master, block), 419 BIT(irq_bit), BIT(irq_bit)); 420 if (rc) { 421 pr_err("Failed to mask IRQ:%d rc=%d\n", pmirq, rc); 422 return; 423 } 424 425 rc = regmap_update_bits(chip->regmap, 426 PM8821_SSBI_ADDR_IRQ_CLEAR(master, block), 427 BIT(irq_bit), BIT(irq_bit)); 428 if (rc) 429 pr_err("Failed to CLEAR IRQ:%d rc=%d\n", pmirq, rc); 430 } 431 432 static void pm8821_irq_unmask(struct irq_data *d) 433 { 434 struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); 435 unsigned int pmirq = irqd_to_hwirq(d); 436 int irq_bit, rc; 437 u8 block, master; 438 439 block = pmirq / 8; 440 master = block / PM8821_BLOCKS_PER_MASTER; 441 irq_bit = pmirq % 8; 442 block %= PM8821_BLOCKS_PER_MASTER; 443 444 rc = regmap_update_bits(chip->regmap, 445 PM8821_SSBI_ADDR_IRQ_MASK(master, block), 446 BIT(irq_bit), ~BIT(irq_bit)); 447 if (rc) 448 pr_err("Failed to read/write unmask IRQ:%d rc=%d\n", pmirq, rc); 449 450 } 451 452 static int pm8821_irq_get_irqchip_state(struct irq_data *d, 453 enum irqchip_irq_state which, 454 bool *state) 455 { 456 struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); 457 int rc, pmirq = irqd_to_hwirq(d); 458 u8 block, irq_bit, master; 459 unsigned int bits; 460 461 block = pmirq / 8; 462 master = block / PM8821_BLOCKS_PER_MASTER; 463 irq_bit = pmirq % 8; 464 block %= PM8821_BLOCKS_PER_MASTER; 465 466 rc = regmap_read(chip->regmap, 467 PM8821_SSBI_ADDR_IRQ_RT_STATUS(master, block), &bits); 468 if (rc) { 469 pr_err("Reading Status of IRQ %d failed rc=%d\n", pmirq, rc); 470 return rc; 471 } 472 473 *state = !!(bits & BIT(irq_bit)); 474 475 return rc; 476 } 477 478 static struct irq_chip pm8821_irq_chip = { 479 .name = "pm8821", 480 .irq_mask_ack = pm8821_irq_mask_ack, 481 .irq_unmask = pm8821_irq_unmask, 482 .irq_get_irqchip_state = pm8821_irq_get_irqchip_state, 483 .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE, 484 }; 485 486 static const struct regmap_config ssbi_regmap_config = { 487 .reg_bits = 16, 488 .val_bits = 8, 489 .max_register = 0x3ff, 490 .fast_io = true, 491 .reg_read = ssbi_reg_read, 492 .reg_write = ssbi_reg_write 493 }; 494 495 static const struct pm_irq_data pm8xxx_data = { 496 .num_irqs = PM8XXX_NR_IRQS, 497 .irq_chip = &pm8xxx_irq_chip, 498 .irq_handler = pm8xxx_irq_handler, 499 }; 500 501 static const struct pm_irq_data pm8821_data = { 502 .num_irqs = PM8821_NR_IRQS, 503 .irq_chip = &pm8821_irq_chip, 504 .irq_handler = pm8821_irq_handler, 505 }; 506 507 static const struct of_device_id pm8xxx_id_table[] = { 508 { .compatible = "qcom,pm8018", .data = &pm8xxx_data}, 509 { .compatible = "qcom,pm8058", .data = &pm8xxx_data}, 510 { .compatible = "qcom,pm8821", .data = &pm8821_data}, 511 { .compatible = "qcom,pm8921", .data = &pm8xxx_data}, 512 { } 513 }; 514 MODULE_DEVICE_TABLE(of, pm8xxx_id_table); 515 516 static int pm8xxx_probe(struct platform_device *pdev) 517 { 518 const struct pm_irq_data *data; 519 struct regmap *regmap; 520 int irq, rc; 521 unsigned int val; 522 u32 rev; 523 struct pm_irq_chip *chip; 524 525 data = of_device_get_match_data(&pdev->dev); 526 if (!data) { 527 dev_err(&pdev->dev, "No matching driver data found\n"); 528 return -EINVAL; 529 } 530 531 irq = platform_get_irq(pdev, 0); 532 if (irq < 0) 533 return irq; 534 535 regmap = devm_regmap_init(&pdev->dev, NULL, pdev->dev.parent, 536 &ssbi_regmap_config); 537 if (IS_ERR(regmap)) 538 return PTR_ERR(regmap); 539 540 /* Read PMIC chip revision */ 541 rc = regmap_read(regmap, REG_HWREV, &val); 542 if (rc) { 543 pr_err("Failed to read hw rev reg %d:rc=%d\n", REG_HWREV, rc); 544 return rc; 545 } 546 pr_info("PMIC revision 1: %02X\n", val); 547 rev = val; 548 549 /* Read PMIC chip revision 2 */ 550 rc = regmap_read(regmap, REG_HWREV_2, &val); 551 if (rc) { 552 pr_err("Failed to read hw rev 2 reg %d:rc=%d\n", 553 REG_HWREV_2, rc); 554 return rc; 555 } 556 pr_info("PMIC revision 2: %02X\n", val); 557 rev |= val << BITS_PER_BYTE; 558 559 chip = devm_kzalloc(&pdev->dev, 560 struct_size(chip, config, data->num_irqs), 561 GFP_KERNEL); 562 if (!chip) 563 return -ENOMEM; 564 565 platform_set_drvdata(pdev, chip); 566 chip->regmap = regmap; 567 chip->num_blocks = DIV_ROUND_UP(data->num_irqs, 8); 568 chip->num_masters = DIV_ROUND_UP(chip->num_blocks, 8); 569 chip->pm_irq_data = data; 570 spin_lock_init(&chip->pm_irq_lock); 571 572 chip->irqdomain = irq_domain_add_linear(pdev->dev.of_node, 573 data->num_irqs, 574 &pm8xxx_irq_domain_ops, 575 chip); 576 if (!chip->irqdomain) 577 return -ENODEV; 578 579 irq_set_chained_handler_and_data(irq, data->irq_handler, chip); 580 irq_set_irq_wake(irq, 1); 581 582 rc = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev); 583 if (rc) { 584 irq_set_chained_handler_and_data(irq, NULL, NULL); 585 irq_domain_remove(chip->irqdomain); 586 } 587 588 return rc; 589 } 590 591 static int pm8xxx_remove_child(struct device *dev, void *unused) 592 { 593 platform_device_unregister(to_platform_device(dev)); 594 return 0; 595 } 596 597 static int pm8xxx_remove(struct platform_device *pdev) 598 { 599 int irq = platform_get_irq(pdev, 0); 600 struct pm_irq_chip *chip = platform_get_drvdata(pdev); 601 602 device_for_each_child(&pdev->dev, NULL, pm8xxx_remove_child); 603 irq_set_chained_handler_and_data(irq, NULL, NULL); 604 irq_domain_remove(chip->irqdomain); 605 606 return 0; 607 } 608 609 static struct platform_driver pm8xxx_driver = { 610 .probe = pm8xxx_probe, 611 .remove = pm8xxx_remove, 612 .driver = { 613 .name = "pm8xxx-core", 614 .of_match_table = pm8xxx_id_table, 615 }, 616 }; 617 618 static int __init pm8xxx_init(void) 619 { 620 return platform_driver_register(&pm8xxx_driver); 621 } 622 subsys_initcall(pm8xxx_init); 623 624 static void __exit pm8xxx_exit(void) 625 { 626 platform_driver_unregister(&pm8xxx_driver); 627 } 628 module_exit(pm8xxx_exit); 629 630 MODULE_LICENSE("GPL v2"); 631 MODULE_DESCRIPTION("PMIC 8xxx core driver"); 632 MODULE_VERSION("1.0"); 633 MODULE_ALIAS("platform:pm8xxx-core"); 634