drivers/mfd/palmas.c

   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 MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
 372
 373 static int palmas_i2c_probe(struct i2c_client *i2c,
 374                             const struct i2c_device_id *id)
 375 {
 376         struct palmas *palmas;
 377         struct palmas_platform_data *pdata;
 378         struct device_node *node = i2c->dev.of_node;
 379         int ret = 0, i;
 380         unsigned int reg, addr, *features;
 381         int slave;
 382         const struct of_device_id *match;
 383
 384         pdata = dev_get_platdata(&i2c->dev);
 385
 386         if (node && !pdata) {
 387                 pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
 388
 389                 if (!pdata)
 390                         return -ENOMEM;
 391
 392                 palmas_dt_to_pdata(i2c, pdata);
 393         }
 394
 395         if (!pdata)
 396                 return -EINVAL;
 397
 398         palmas = devm_kzalloc(&i2c->dev, sizeof(struct palmas), GFP_KERNEL);
 399         if (palmas == NULL)
 400                 return -ENOMEM;
 401
 402         i2c_set_clientdata(i2c, palmas);
 403         palmas->dev = &i2c->dev;
 404         palmas->irq = i2c->irq;
 405
 406         match = of_match_device(of_palmas_match_tbl, &i2c->dev);
 407
 408         if (!match)
 409                 return -ENODATA;
 410
 411         features = (unsigned int *)match->data;
 412         palmas->features = *features;
 413
 414         for (i = 0; i < PALMAS_NUM_CLIENTS; i++) {
 415                 if (i == 0)
 416                         palmas->i2c_clients[i] = i2c;
 417                 else {
 418                         palmas->i2c_clients[i] =
 419                                         i2c_new_dummy(i2c->adapter,
 420                                                         i2c->addr + i);
 421                         if (!palmas->i2c_clients[i]) {
 422                                 dev_err(palmas->dev,
 423                                         "can't attach client %d\n", i);
 424                                 ret = -ENOMEM;
 425                                 goto err_i2c;
 426                         }
 427                         palmas->i2c_clients[i]->dev.of_node = of_node_get(node);
 428                 }
 429                 palmas->regmap[i] = devm_regmap_init_i2c(palmas->i2c_clients[i],
 430                                 &palmas_regmap_config[i]);
 431                 if (IS_ERR(palmas->regmap[i])) {
 432                         ret = PTR_ERR(palmas->regmap[i]);
 433                         dev_err(palmas->dev,
 434                                 "Failed to allocate regmap %d, err: %d\n",
 435                                 i, ret);
 436                         goto err_i2c;
 437                 }
 438         }
 439
 440         if (!palmas->irq) {
 441                 dev_warn(palmas->dev, "IRQ missing: skipping irq request\n");
 442                 goto no_irq;
 443         }
 444
 445         /* Change interrupt line output polarity */
 446         if (pdata->irq_flags & IRQ_TYPE_LEVEL_HIGH)
 447                 reg = PALMAS_POLARITY_CTRL_INT_POLARITY;
 448         else
 449                 reg = 0;
 450         ret = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
 451                         PALMAS_POLARITY_CTRL, PALMAS_POLARITY_CTRL_INT_POLARITY,
 452                         reg);
 453         if (ret < 0) {
 454                 dev_err(palmas->dev, "POLARITY_CTRL updat failed: %d\n", ret);
 455                 goto err_i2c;
 456         }
 457
 458         /* Change IRQ into clear on read mode for efficiency */
 459         slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE);
 460         addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL);
 461         reg = PALMAS_INT_CTRL_INT_CLEAR;
 462
 463         regmap_write(palmas->regmap[slave], addr, reg);
 464
 465         ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq,
 466                         IRQF_ONESHOT | pdata->irq_flags, 0, &palmas_irq_chip,
 467                         &palmas->irq_data);
 468         if (ret < 0)
 469                 goto err_i2c;
 470
 471 no_irq:
 472         slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
 473         addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
 474                         PALMAS_PRIMARY_SECONDARY_PAD1);
 475
 476         if (pdata->mux_from_pdata) {
 477                 reg = pdata->pad1;
 478                 ret = regmap_write(palmas->regmap[slave], addr, reg);
 479                 if (ret)
 480                         goto err_irq;
 481         } else {
 482                 ret = regmap_read(palmas->regmap[slave], addr, &reg);
 483                 if (ret)
 484                         goto err_irq;
 485         }
 486
 487         if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0))
 488                 palmas->gpio_muxed |= PALMAS_GPIO_0_MUXED;
 489         if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK))
 490                 palmas->gpio_muxed |= PALMAS_GPIO_1_MUXED;
 491         else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
 492                         (2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
 493                 palmas->led_muxed |= PALMAS_LED1_MUXED;
 494         else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
 495                         (3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
 496                 palmas->pwm_muxed |= PALMAS_PWM1_MUXED;
 497         if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK))
 498                 palmas->gpio_muxed |= PALMAS_GPIO_2_MUXED;
 499         else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
 500                         (2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
 501                 palmas->led_muxed |= PALMAS_LED2_MUXED;
 502         else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
 503                         (3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
 504                 palmas->pwm_muxed |= PALMAS_PWM2_MUXED;
 505         if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3))
 506                 palmas->gpio_muxed |= PALMAS_GPIO_3_MUXED;
 507
 508         addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
 509                         PALMAS_PRIMARY_SECONDARY_PAD2);
 510
 511         if (pdata->mux_from_pdata) {
 512                 reg = pdata->pad2;
 513                 ret = regmap_write(palmas->regmap[slave], addr, reg);
 514                 if (ret)
 515                         goto err_irq;
 516         } else {
 517                 ret = regmap_read(palmas->regmap[slave], addr, &reg);
 518                 if (ret)
 519                         goto err_irq;
 520         }
 521
 522         if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4))
 523                 palmas->gpio_muxed |= PALMAS_GPIO_4_MUXED;
 524         if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK))
 525                 palmas->gpio_muxed |= PALMAS_GPIO_5_MUXED;
 526         if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_6))
 527                 palmas->gpio_muxed |= PALMAS_GPIO_6_MUXED;
 528         if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK))
 529                 palmas->gpio_muxed |= PALMAS_GPIO_7_MUXED;
 530
 531         dev_info(palmas->dev, "Muxing GPIO %x, PWM %x, LED %x\n",
 532                         palmas->gpio_muxed, palmas->pwm_muxed,
 533                         palmas->led_muxed);
 534
 535         reg = pdata->power_ctrl;
 536
 537         slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
 538         addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_POWER_CTRL);
 539
 540         ret = regmap_write(palmas->regmap[slave], addr, reg);
 541         if (ret)
 542                 goto err_irq;
 543
 544         /*
 545          * If we are probing with DT do this the DT way and return here
 546          * otherwise continue and add devices using mfd helpers.
 547          */
 548         if (node) {
 549                 ret = of_platform_populate(node, NULL, NULL, &i2c->dev);
 550                 if (ret < 0) {
 551                         goto err_irq;
 552                 } else if (pdata->pm_off && !pm_power_off) {
 553                         palmas_dev = palmas;
 554                         pm_power_off = palmas_power_off;
 555                 }
 556         }
 557
 558         return ret;
 559
 560 err_irq:
 561         regmap_del_irq_chip(palmas->irq, palmas->irq_data);
 562 err_i2c:
 563         for (i = 1; i < PALMAS_NUM_CLIENTS; i++) {
 564                 if (palmas->i2c_clients[i])
 565                         i2c_unregister_device(palmas->i2c_clients[i]);
 566         }
 567         return ret;
 568 }
 569
 570 static int palmas_i2c_remove(struct i2c_client *i2c)
 571 {
 572         struct palmas *palmas = i2c_get_clientdata(i2c);
 573         int i;
 574
 575         regmap_del_irq_chip(palmas->irq, palmas->irq_data);
 576
 577         for (i = 1; i < PALMAS_NUM_CLIENTS; i++) {
 578                 if (palmas->i2c_clients[i])
 579                         i2c_unregister_device(palmas->i2c_clients[i]);
 580         }
 581
 582         if (palmas == palmas_dev) {
 583                 pm_power_off = NULL;
 584                 palmas_dev = NULL;
 585         }
 586
 587         return 0;
 588 }
 589
 590 static const struct i2c_device_id palmas_i2c_id[] = {
 591         { "palmas", },
 592         { "twl6035", },
 593         { "twl6037", },
 594         { "tps65913", },
 595         { /* end */ }
 596 };
 597 MODULE_DEVICE_TABLE(i2c, palmas_i2c_id);
 598
 599 static struct i2c_driver palmas_i2c_driver = {
 600         .driver = {
 601                    .name = "palmas",
 602                    .of_match_table = of_palmas_match_tbl,
 603                    .owner = THIS_MODULE,
 604         },
 605         .probe = palmas_i2c_probe,
 606         .remove = palmas_i2c_remove,
 607         .id_table = palmas_i2c_id,
 608 };
 609
 610 static int __init palmas_i2c_init(void)
 611 {
 612         return i2c_add_driver(&palmas_i2c_driver);
 613 }
 614 /* init early so consumer devices can complete system boot */
 615 subsys_initcall(palmas_i2c_init);
 616
 617 static void __exit palmas_i2c_exit(void)
 618 {
 619         i2c_del_driver(&palmas_i2c_driver);
 620 }
 621 module_exit(palmas_i2c_exit);
 622
 623 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
 624 MODULE_DESCRIPTION("Palmas chip family multi-function driver");
 625 MODULE_LICENSE("GPL");