1 /* 2 * TI Palmas MFD Driver 3 * 4 * Copyright 2011-2012 Texas Instruments Inc. 5 * 6 * Author: Graeme Gregory <gg@slimlogic.co.uk> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 */ 14 15 #include <linux/module.h> 16 #include <linux/moduleparam.h> 17 #include <linux/init.h> 18 #include <linux/slab.h> 19 #include <linux/i2c.h> 20 #include <linux/interrupt.h> 21 #include <linux/irq.h> 22 #include <linux/regmap.h> 23 #include <linux/err.h> 24 #include <linux/mfd/core.h> 25 #include <linux/mfd/palmas.h> 26 #include <linux/of_device.h> 27 28 #define PALMAS_EXT_REQ (PALMAS_EXT_CONTROL_ENABLE1 | \ 29 PALMAS_EXT_CONTROL_ENABLE2 | \ 30 PALMAS_EXT_CONTROL_NSLEEP) 31 32 struct palmas_sleep_requestor_info { 33 int id; 34 int reg_offset; 35 int bit_pos; 36 }; 37 38 #define EXTERNAL_REQUESTOR(_id, _offset, _pos) \ 39 [PALMAS_EXTERNAL_REQSTR_ID_##_id] = { \ 40 .id = PALMAS_EXTERNAL_REQSTR_ID_##_id, \ 41 .reg_offset = _offset, \ 42 .bit_pos = _pos, \ 43 } 44 45 static struct palmas_sleep_requestor_info sleep_req_info[] = { 46 EXTERNAL_REQUESTOR(REGEN1, 0, 0), 47 EXTERNAL_REQUESTOR(REGEN2, 0, 1), 48 EXTERNAL_REQUESTOR(SYSEN1, 0, 2), 49 EXTERNAL_REQUESTOR(SYSEN2, 0, 3), 50 EXTERNAL_REQUESTOR(CLK32KG, 0, 4), 51 EXTERNAL_REQUESTOR(CLK32KGAUDIO, 0, 5), 52 EXTERNAL_REQUESTOR(REGEN3, 0, 6), 53 EXTERNAL_REQUESTOR(SMPS12, 1, 0), 54 EXTERNAL_REQUESTOR(SMPS3, 1, 1), 55 EXTERNAL_REQUESTOR(SMPS45, 1, 2), 56 EXTERNAL_REQUESTOR(SMPS6, 1, 3), 57 EXTERNAL_REQUESTOR(SMPS7, 1, 4), 58 EXTERNAL_REQUESTOR(SMPS8, 1, 5), 59 EXTERNAL_REQUESTOR(SMPS9, 1, 6), 60 EXTERNAL_REQUESTOR(SMPS10, 1, 7), 61 EXTERNAL_REQUESTOR(LDO1, 2, 0), 62 EXTERNAL_REQUESTOR(LDO2, 2, 1), 63 EXTERNAL_REQUESTOR(LDO3, 2, 2), 64 EXTERNAL_REQUESTOR(LDO4, 2, 3), 65 EXTERNAL_REQUESTOR(LDO5, 2, 4), 66 EXTERNAL_REQUESTOR(LDO6, 2, 5), 67 EXTERNAL_REQUESTOR(LDO7, 2, 6), 68 EXTERNAL_REQUESTOR(LDO8, 2, 7), 69 EXTERNAL_REQUESTOR(LDO9, 3, 0), 70 EXTERNAL_REQUESTOR(LDOLN, 3, 1), 71 EXTERNAL_REQUESTOR(LDOUSB, 3, 2), 72 }; 73 74 static const struct regmap_config palmas_regmap_config[PALMAS_NUM_CLIENTS] = { 75 { 76 .reg_bits = 8, 77 .val_bits = 8, 78 .max_register = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE, 79 PALMAS_PRIMARY_SECONDARY_PAD3), 80 }, 81 { 82 .reg_bits = 8, 83 .val_bits = 8, 84 .max_register = PALMAS_BASE_TO_REG(PALMAS_GPADC_BASE, 85 PALMAS_GPADC_SMPS_VSEL_MONITORING), 86 }, 87 { 88 .reg_bits = 8, 89 .val_bits = 8, 90 .max_register = PALMAS_BASE_TO_REG(PALMAS_TRIM_GPADC_BASE, 91 PALMAS_GPADC_TRIM16), 92 }, 93 }; 94 95 static const struct regmap_irq palmas_irqs[] = { 96 /* INT1 IRQs */ 97 [PALMAS_CHARG_DET_N_VBUS_OVV_IRQ] = { 98 .mask = PALMAS_INT1_STATUS_CHARG_DET_N_VBUS_OVV, 99 }, 100 [PALMAS_PWRON_IRQ] = { 101 .mask = PALMAS_INT1_STATUS_PWRON, 102 }, 103 [PALMAS_LONG_PRESS_KEY_IRQ] = { 104 .mask = PALMAS_INT1_STATUS_LONG_PRESS_KEY, 105 }, 106 [PALMAS_RPWRON_IRQ] = { 107 .mask = PALMAS_INT1_STATUS_RPWRON, 108 }, 109 [PALMAS_PWRDOWN_IRQ] = { 110 .mask = PALMAS_INT1_STATUS_PWRDOWN, 111 }, 112 [PALMAS_HOTDIE_IRQ] = { 113 .mask = PALMAS_INT1_STATUS_HOTDIE, 114 }, 115 [PALMAS_VSYS_MON_IRQ] = { 116 .mask = PALMAS_INT1_STATUS_VSYS_MON, 117 }, 118 [PALMAS_VBAT_MON_IRQ] = { 119 .mask = PALMAS_INT1_STATUS_VBAT_MON, 120 }, 121 /* INT2 IRQs*/ 122 [PALMAS_RTC_ALARM_IRQ] = { 123 .mask = PALMAS_INT2_STATUS_RTC_ALARM, 124 .reg_offset = 1, 125 }, 126 [PALMAS_RTC_TIMER_IRQ] = { 127 .mask = PALMAS_INT2_STATUS_RTC_TIMER, 128 .reg_offset = 1, 129 }, 130 [PALMAS_WDT_IRQ] = { 131 .mask = PALMAS_INT2_STATUS_WDT, 132 .reg_offset = 1, 133 }, 134 [PALMAS_BATREMOVAL_IRQ] = { 135 .mask = PALMAS_INT2_STATUS_BATREMOVAL, 136 .reg_offset = 1, 137 }, 138 [PALMAS_RESET_IN_IRQ] = { 139 .mask = PALMAS_INT2_STATUS_RESET_IN, 140 .reg_offset = 1, 141 }, 142 [PALMAS_FBI_BB_IRQ] = { 143 .mask = PALMAS_INT2_STATUS_FBI_BB, 144 .reg_offset = 1, 145 }, 146 [PALMAS_SHORT_IRQ] = { 147 .mask = PALMAS_INT2_STATUS_SHORT, 148 .reg_offset = 1, 149 }, 150 [PALMAS_VAC_ACOK_IRQ] = { 151 .mask = PALMAS_INT2_STATUS_VAC_ACOK, 152 .reg_offset = 1, 153 }, 154 /* INT3 IRQs */ 155 [PALMAS_GPADC_AUTO_0_IRQ] = { 156 .mask = PALMAS_INT3_STATUS_GPADC_AUTO_0, 157 .reg_offset = 2, 158 }, 159 [PALMAS_GPADC_AUTO_1_IRQ] = { 160 .mask = PALMAS_INT3_STATUS_GPADC_AUTO_1, 161 .reg_offset = 2, 162 }, 163 [PALMAS_GPADC_EOC_SW_IRQ] = { 164 .mask = PALMAS_INT3_STATUS_GPADC_EOC_SW, 165 .reg_offset = 2, 166 }, 167 [PALMAS_GPADC_EOC_RT_IRQ] = { 168 .mask = PALMAS_INT3_STATUS_GPADC_EOC_RT, 169 .reg_offset = 2, 170 }, 171 [PALMAS_ID_OTG_IRQ] = { 172 .mask = PALMAS_INT3_STATUS_ID_OTG, 173 .reg_offset = 2, 174 }, 175 [PALMAS_ID_IRQ] = { 176 .mask = PALMAS_INT3_STATUS_ID, 177 .reg_offset = 2, 178 }, 179 [PALMAS_VBUS_OTG_IRQ] = { 180 .mask = PALMAS_INT3_STATUS_VBUS_OTG, 181 .reg_offset = 2, 182 }, 183 [PALMAS_VBUS_IRQ] = { 184 .mask = PALMAS_INT3_STATUS_VBUS, 185 .reg_offset = 2, 186 }, 187 /* INT4 IRQs */ 188 [PALMAS_GPIO_0_IRQ] = { 189 .mask = PALMAS_INT4_STATUS_GPIO_0, 190 .reg_offset = 3, 191 }, 192 [PALMAS_GPIO_1_IRQ] = { 193 .mask = PALMAS_INT4_STATUS_GPIO_1, 194 .reg_offset = 3, 195 }, 196 [PALMAS_GPIO_2_IRQ] = { 197 .mask = PALMAS_INT4_STATUS_GPIO_2, 198 .reg_offset = 3, 199 }, 200 [PALMAS_GPIO_3_IRQ] = { 201 .mask = PALMAS_INT4_STATUS_GPIO_3, 202 .reg_offset = 3, 203 }, 204 [PALMAS_GPIO_4_IRQ] = { 205 .mask = PALMAS_INT4_STATUS_GPIO_4, 206 .reg_offset = 3, 207 }, 208 [PALMAS_GPIO_5_IRQ] = { 209 .mask = PALMAS_INT4_STATUS_GPIO_5, 210 .reg_offset = 3, 211 }, 212 [PALMAS_GPIO_6_IRQ] = { 213 .mask = PALMAS_INT4_STATUS_GPIO_6, 214 .reg_offset = 3, 215 }, 216 [PALMAS_GPIO_7_IRQ] = { 217 .mask = PALMAS_INT4_STATUS_GPIO_7, 218 .reg_offset = 3, 219 }, 220 }; 221 222 static struct regmap_irq_chip palmas_irq_chip = { 223 .name = "palmas", 224 .irqs = palmas_irqs, 225 .num_irqs = ARRAY_SIZE(palmas_irqs), 226 227 .num_regs = 4, 228 .irq_reg_stride = 5, 229 .status_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, 230 PALMAS_INT1_STATUS), 231 .mask_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, 232 PALMAS_INT1_MASK), 233 }; 234 235 int palmas_ext_control_req_config(struct palmas *palmas, 236 enum palmas_external_requestor_id id, int ext_ctrl, bool enable) 237 { 238 int preq_mask_bit = 0; 239 int reg_add = 0; 240 int bit_pos; 241 int ret; 242 243 if (!(ext_ctrl & PALMAS_EXT_REQ)) 244 return 0; 245 246 if (id >= PALMAS_EXTERNAL_REQSTR_ID_MAX) 247 return 0; 248 249 if (ext_ctrl & PALMAS_EXT_CONTROL_NSLEEP) { 250 reg_add = PALMAS_NSLEEP_RES_ASSIGN; 251 preq_mask_bit = 0; 252 } else if (ext_ctrl & PALMAS_EXT_CONTROL_ENABLE1) { 253 reg_add = PALMAS_ENABLE1_RES_ASSIGN; 254 preq_mask_bit = 1; 255 } else if (ext_ctrl & PALMAS_EXT_CONTROL_ENABLE2) { 256 reg_add = PALMAS_ENABLE2_RES_ASSIGN; 257 preq_mask_bit = 2; 258 } 259 260 bit_pos = sleep_req_info[id].bit_pos; 261 reg_add += sleep_req_info[id].reg_offset; 262 if (enable) 263 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE, 264 reg_add, BIT(bit_pos), BIT(bit_pos)); 265 else 266 ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE, 267 reg_add, BIT(bit_pos), 0); 268 if (ret < 0) { 269 dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n", 270 reg_add, ret); 271 return ret; 272 } 273 274 /* Unmask the PREQ */ 275 ret = palmas_update_bits(palmas, PALMAS_PMU_CONTROL_BASE, 276 PALMAS_POWER_CTRL, BIT(preq_mask_bit), 0); 277 if (ret < 0) { 278 dev_err(palmas->dev, "POWER_CTRL register update failed %d\n", 279 ret); 280 return ret; 281 } 282 return ret; 283 } 284 EXPORT_SYMBOL_GPL(palmas_ext_control_req_config); 285 286 static int palmas_set_pdata_irq_flag(struct i2c_client *i2c, 287 struct palmas_platform_data *pdata) 288 { 289 struct irq_data *irq_data = irq_get_irq_data(i2c->irq); 290 if (!irq_data) { 291 dev_err(&i2c->dev, "Invalid IRQ: %d\n", i2c->irq); 292 return -EINVAL; 293 } 294 295 pdata->irq_flags = irqd_get_trigger_type(irq_data); 296 dev_info(&i2c->dev, "Irq flag is 0x%08x\n", pdata->irq_flags); 297 return 0; 298 } 299 300 static void palmas_dt_to_pdata(struct i2c_client *i2c, 301 struct palmas_platform_data *pdata) 302 { 303 struct device_node *node = i2c->dev.of_node; 304 int ret; 305 u32 prop; 306 307 ret = of_property_read_u32(node, "ti,mux-pad1", &prop); 308 if (!ret) { 309 pdata->mux_from_pdata = 1; 310 pdata->pad1 = prop; 311 } 312 313 ret = of_property_read_u32(node, "ti,mux-pad2", &prop); 314 if (!ret) { 315 pdata->mux_from_pdata = 1; 316 pdata->pad2 = prop; 317 } 318 319 /* The default for this register is all masked */ 320 ret = of_property_read_u32(node, "ti,power-ctrl", &prop); 321 if (!ret) 322 pdata->power_ctrl = prop; 323 else 324 pdata->power_ctrl = PALMAS_POWER_CTRL_NSLEEP_MASK | 325 PALMAS_POWER_CTRL_ENABLE1_MASK | 326 PALMAS_POWER_CTRL_ENABLE2_MASK; 327 if (i2c->irq) 328 palmas_set_pdata_irq_flag(i2c, pdata); 329 330 pdata->pm_off = of_property_read_bool(node, 331 "ti,system-power-controller"); 332 } 333 334 static struct palmas *palmas_dev; 335 static void palmas_power_off(void) 336 { 337 unsigned int addr; 338 int ret, slave; 339 340 if (!palmas_dev) 341 return; 342 343 slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE); 344 addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_DEV_CTRL); 345 346 ret = regmap_update_bits( 347 palmas_dev->regmap[slave], 348 addr, 349 PALMAS_DEV_CTRL_DEV_ON, 350 0); 351 352 if (ret) 353 pr_err("%s: Unable to write to DEV_CTRL_DEV_ON: %d\n", 354 __func__, ret); 355 } 356 357 static unsigned int palmas_features = PALMAS_PMIC_FEATURE_SMPS10_BOOST; 358 static unsigned int tps659038_features; 359 360 static const struct of_device_id of_palmas_match_tbl[] = { 361 { 362 .compatible = "ti,palmas", 363 .data = &palmas_features, 364 }, 365 { 366 .compatible = "ti,tps659038", 367 .data = &tps659038_features, 368 }, 369 { }, 370 }; 371 372 static int palmas_i2c_probe(struct i2c_client *i2c, 373 const struct i2c_device_id *id) 374 { 375 struct palmas *palmas; 376 struct palmas_platform_data *pdata; 377 struct device_node *node = i2c->dev.of_node; 378 int ret = 0, i; 379 unsigned int reg, addr, *features; 380 int slave; 381 const struct of_device_id *match; 382 383 pdata = dev_get_platdata(&i2c->dev); 384 385 if (node && !pdata) { 386 pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL); 387 388 if (!pdata) 389 return -ENOMEM; 390 391 palmas_dt_to_pdata(i2c, pdata); 392 } 393 394 if (!pdata) 395 return -EINVAL; 396 397 palmas = devm_kzalloc(&i2c->dev, sizeof(struct palmas), GFP_KERNEL); 398 if (palmas == NULL) 399 return -ENOMEM; 400 401 i2c_set_clientdata(i2c, palmas); 402 palmas->dev = &i2c->dev; 403 palmas->irq = i2c->irq; 404 405 match = of_match_device(of_match_ptr(of_palmas_match_tbl), &i2c->dev); 406 407 if (!match) 408 return -ENODATA; 409 410 features = (unsigned int *)match->data; 411 palmas->features = *features; 412 413 for (i = 0; i < PALMAS_NUM_CLIENTS; i++) { 414 if (i == 0) 415 palmas->i2c_clients[i] = i2c; 416 else { 417 palmas->i2c_clients[i] = 418 i2c_new_dummy(i2c->adapter, 419 i2c->addr + i); 420 if (!palmas->i2c_clients[i]) { 421 dev_err(palmas->dev, 422 "can't attach client %d\n", i); 423 ret = -ENOMEM; 424 goto err; 425 } 426 palmas->i2c_clients[i]->dev.of_node = of_node_get(node); 427 } 428 palmas->regmap[i] = devm_regmap_init_i2c(palmas->i2c_clients[i], 429 &palmas_regmap_config[i]); 430 if (IS_ERR(palmas->regmap[i])) { 431 ret = PTR_ERR(palmas->regmap[i]); 432 dev_err(palmas->dev, 433 "Failed to allocate regmap %d, err: %d\n", 434 i, ret); 435 goto err; 436 } 437 } 438 439 if (!palmas->irq) { 440 dev_warn(palmas->dev, "IRQ missing: skipping irq request\n"); 441 goto no_irq; 442 } 443 444 /* Change interrupt line output polarity */ 445 if (pdata->irq_flags & IRQ_TYPE_LEVEL_HIGH) 446 reg = PALMAS_POLARITY_CTRL_INT_POLARITY; 447 else 448 reg = 0; 449 ret = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE, 450 PALMAS_POLARITY_CTRL, PALMAS_POLARITY_CTRL_INT_POLARITY, 451 reg); 452 if (ret < 0) { 453 dev_err(palmas->dev, "POLARITY_CTRL updat failed: %d\n", ret); 454 goto err; 455 } 456 457 /* Change IRQ into clear on read mode for efficiency */ 458 slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE); 459 addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL); 460 reg = PALMAS_INT_CTRL_INT_CLEAR; 461 462 regmap_write(palmas->regmap[slave], addr, reg); 463 464 ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq, 465 IRQF_ONESHOT | pdata->irq_flags, 0, &palmas_irq_chip, 466 &palmas->irq_data); 467 if (ret < 0) 468 goto err; 469 470 no_irq: 471 slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE); 472 addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE, 473 PALMAS_PRIMARY_SECONDARY_PAD1); 474 475 if (pdata->mux_from_pdata) { 476 reg = pdata->pad1; 477 ret = regmap_write(palmas->regmap[slave], addr, reg); 478 if (ret) 479 goto err_irq; 480 } else { 481 ret = regmap_read(palmas->regmap[slave], addr, ®); 482 if (ret) 483 goto err_irq; 484 } 485 486 if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0)) 487 palmas->gpio_muxed |= PALMAS_GPIO_0_MUXED; 488 if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK)) 489 palmas->gpio_muxed |= PALMAS_GPIO_1_MUXED; 490 else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) == 491 (2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT)) 492 palmas->led_muxed |= PALMAS_LED1_MUXED; 493 else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) == 494 (3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT)) 495 palmas->pwm_muxed |= PALMAS_PWM1_MUXED; 496 if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK)) 497 palmas->gpio_muxed |= PALMAS_GPIO_2_MUXED; 498 else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) == 499 (2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT)) 500 palmas->led_muxed |= PALMAS_LED2_MUXED; 501 else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) == 502 (3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT)) 503 palmas->pwm_muxed |= PALMAS_PWM2_MUXED; 504 if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3)) 505 palmas->gpio_muxed |= PALMAS_GPIO_3_MUXED; 506 507 addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE, 508 PALMAS_PRIMARY_SECONDARY_PAD2); 509 510 if (pdata->mux_from_pdata) { 511 reg = pdata->pad2; 512 ret = regmap_write(palmas->regmap[slave], addr, reg); 513 if (ret) 514 goto err_irq; 515 } else { 516 ret = regmap_read(palmas->regmap[slave], addr, ®); 517 if (ret) 518 goto err_irq; 519 } 520 521 if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4)) 522 palmas->gpio_muxed |= PALMAS_GPIO_4_MUXED; 523 if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK)) 524 palmas->gpio_muxed |= PALMAS_GPIO_5_MUXED; 525 if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_6)) 526 palmas->gpio_muxed |= PALMAS_GPIO_6_MUXED; 527 if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK)) 528 palmas->gpio_muxed |= PALMAS_GPIO_7_MUXED; 529 530 dev_info(palmas->dev, "Muxing GPIO %x, PWM %x, LED %x\n", 531 palmas->gpio_muxed, palmas->pwm_muxed, 532 palmas->led_muxed); 533 534 reg = pdata->power_ctrl; 535 536 slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE); 537 addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_POWER_CTRL); 538 539 ret = regmap_write(palmas->regmap[slave], addr, reg); 540 if (ret) 541 goto err_irq; 542 543 /* 544 * If we are probing with DT do this the DT way and return here 545 * otherwise continue and add devices using mfd helpers. 546 */ 547 if (node) { 548 ret = of_platform_populate(node, NULL, NULL, &i2c->dev); 549 if (ret < 0) { 550 goto err_irq; 551 } else if (pdata->pm_off && !pm_power_off) { 552 palmas_dev = palmas; 553 pm_power_off = palmas_power_off; 554 return ret; 555 } 556 } 557 558 return ret; 559 560 err_irq: 561 regmap_del_irq_chip(palmas->irq, palmas->irq_data); 562 err: 563 return ret; 564 } 565 566 static int palmas_i2c_remove(struct i2c_client *i2c) 567 { 568 struct palmas *palmas = i2c_get_clientdata(i2c); 569 570 mfd_remove_devices(palmas->dev); 571 regmap_del_irq_chip(palmas->irq, palmas->irq_data); 572 573 return 0; 574 } 575 576 static const struct i2c_device_id palmas_i2c_id[] = { 577 { "palmas", }, 578 { "twl6035", }, 579 { "twl6037", }, 580 { "tps65913", }, 581 { /* end */ } 582 }; 583 MODULE_DEVICE_TABLE(i2c, palmas_i2c_id); 584 585 static struct i2c_driver palmas_i2c_driver = { 586 .driver = { 587 .name = "palmas", 588 .of_match_table = of_palmas_match_tbl, 589 .owner = THIS_MODULE, 590 }, 591 .probe = palmas_i2c_probe, 592 .remove = palmas_i2c_remove, 593 .id_table = palmas_i2c_id, 594 }; 595 596 static int __init palmas_i2c_init(void) 597 { 598 return i2c_add_driver(&palmas_i2c_driver); 599 } 600 /* init early so consumer devices can complete system boot */ 601 subsys_initcall(palmas_i2c_init); 602 603 static void __exit palmas_i2c_exit(void) 604 { 605 i2c_del_driver(&palmas_i2c_driver); 606 } 607 module_exit(palmas_i2c_exit); 608 609 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); 610 MODULE_DESCRIPTION("Palmas chip family multi-function driver"); 611 MODULE_LICENSE("GPL"); 612