linux/drivers/mfd/da9052-core.c
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   1/*
   2 * Device access for Dialog DA9052 PMICs.
   3 *
   4 * Copyright(c) 2011 Dialog Semiconductor Ltd.
   5 *
   6 * Author: David Dajun Chen <dchen@diasemi.com>
   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#include <linux/device.h>
  15#include <linux/delay.h>
  16#include <linux/input.h>
  17#include <linux/interrupt.h>
  18#include <linux/mfd/core.h>
  19#include <linux/slab.h>
  20#include <linux/module.h>
  21
  22#include <linux/mfd/da9052/da9052.h>
  23#include <linux/mfd/da9052/pdata.h>
  24#include <linux/mfd/da9052/reg.h>
  25
  26static bool da9052_reg_readable(struct device *dev, unsigned int reg)
  27{
  28        switch (reg) {
  29        case DA9052_PAGE0_CON_REG:
  30        case DA9052_STATUS_A_REG:
  31        case DA9052_STATUS_B_REG:
  32        case DA9052_STATUS_C_REG:
  33        case DA9052_STATUS_D_REG:
  34        case DA9052_EVENT_A_REG:
  35        case DA9052_EVENT_B_REG:
  36        case DA9052_EVENT_C_REG:
  37        case DA9052_EVENT_D_REG:
  38        case DA9052_FAULTLOG_REG:
  39        case DA9052_IRQ_MASK_A_REG:
  40        case DA9052_IRQ_MASK_B_REG:
  41        case DA9052_IRQ_MASK_C_REG:
  42        case DA9052_IRQ_MASK_D_REG:
  43        case DA9052_CONTROL_A_REG:
  44        case DA9052_CONTROL_B_REG:
  45        case DA9052_CONTROL_C_REG:
  46        case DA9052_CONTROL_D_REG:
  47        case DA9052_PDDIS_REG:
  48        case DA9052_INTERFACE_REG:
  49        case DA9052_RESET_REG:
  50        case DA9052_GPIO_0_1_REG:
  51        case DA9052_GPIO_2_3_REG:
  52        case DA9052_GPIO_4_5_REG:
  53        case DA9052_GPIO_6_7_REG:
  54        case DA9052_GPIO_14_15_REG:
  55        case DA9052_ID_0_1_REG:
  56        case DA9052_ID_2_3_REG:
  57        case DA9052_ID_4_5_REG:
  58        case DA9052_ID_6_7_REG:
  59        case DA9052_ID_8_9_REG:
  60        case DA9052_ID_10_11_REG:
  61        case DA9052_ID_12_13_REG:
  62        case DA9052_ID_14_15_REG:
  63        case DA9052_ID_16_17_REG:
  64        case DA9052_ID_18_19_REG:
  65        case DA9052_ID_20_21_REG:
  66        case DA9052_SEQ_STATUS_REG:
  67        case DA9052_SEQ_A_REG:
  68        case DA9052_SEQ_B_REG:
  69        case DA9052_SEQ_TIMER_REG:
  70        case DA9052_BUCKA_REG:
  71        case DA9052_BUCKB_REG:
  72        case DA9052_BUCKCORE_REG:
  73        case DA9052_BUCKPRO_REG:
  74        case DA9052_BUCKMEM_REG:
  75        case DA9052_BUCKPERI_REG:
  76        case DA9052_LDO1_REG:
  77        case DA9052_LDO2_REG:
  78        case DA9052_LDO3_REG:
  79        case DA9052_LDO4_REG:
  80        case DA9052_LDO5_REG:
  81        case DA9052_LDO6_REG:
  82        case DA9052_LDO7_REG:
  83        case DA9052_LDO8_REG:
  84        case DA9052_LDO9_REG:
  85        case DA9052_LDO10_REG:
  86        case DA9052_SUPPLY_REG:
  87        case DA9052_PULLDOWN_REG:
  88        case DA9052_CHGBUCK_REG:
  89        case DA9052_WAITCONT_REG:
  90        case DA9052_ISET_REG:
  91        case DA9052_BATCHG_REG:
  92        case DA9052_CHG_CONT_REG:
  93        case DA9052_INPUT_CONT_REG:
  94        case DA9052_CHG_TIME_REG:
  95        case DA9052_BBAT_CONT_REG:
  96        case DA9052_BOOST_REG:
  97        case DA9052_LED_CONT_REG:
  98        case DA9052_LEDMIN123_REG:
  99        case DA9052_LED1_CONF_REG:
 100        case DA9052_LED2_CONF_REG:
 101        case DA9052_LED3_CONF_REG:
 102        case DA9052_LED1CONT_REG:
 103        case DA9052_LED2CONT_REG:
 104        case DA9052_LED3CONT_REG:
 105        case DA9052_LED_CONT_4_REG:
 106        case DA9052_LED_CONT_5_REG:
 107        case DA9052_ADC_MAN_REG:
 108        case DA9052_ADC_CONT_REG:
 109        case DA9052_ADC_RES_L_REG:
 110        case DA9052_ADC_RES_H_REG:
 111        case DA9052_VDD_RES_REG:
 112        case DA9052_VDD_MON_REG:
 113        case DA9052_ICHG_AV_REG:
 114        case DA9052_ICHG_THD_REG:
 115        case DA9052_ICHG_END_REG:
 116        case DA9052_TBAT_RES_REG:
 117        case DA9052_TBAT_HIGHP_REG:
 118        case DA9052_TBAT_HIGHN_REG:
 119        case DA9052_TBAT_LOW_REG:
 120        case DA9052_T_OFFSET_REG:
 121        case DA9052_ADCIN4_RES_REG:
 122        case DA9052_AUTO4_HIGH_REG:
 123        case DA9052_AUTO4_LOW_REG:
 124        case DA9052_ADCIN5_RES_REG:
 125        case DA9052_AUTO5_HIGH_REG:
 126        case DA9052_AUTO5_LOW_REG:
 127        case DA9052_ADCIN6_RES_REG:
 128        case DA9052_AUTO6_HIGH_REG:
 129        case DA9052_AUTO6_LOW_REG:
 130        case DA9052_TJUNC_RES_REG:
 131        case DA9052_TSI_CONT_A_REG:
 132        case DA9052_TSI_CONT_B_REG:
 133        case DA9052_TSI_X_MSB_REG:
 134        case DA9052_TSI_Y_MSB_REG:
 135        case DA9052_TSI_LSB_REG:
 136        case DA9052_TSI_Z_MSB_REG:
 137        case DA9052_COUNT_S_REG:
 138        case DA9052_COUNT_MI_REG:
 139        case DA9052_COUNT_H_REG:
 140        case DA9052_COUNT_D_REG:
 141        case DA9052_COUNT_MO_REG:
 142        case DA9052_COUNT_Y_REG:
 143        case DA9052_ALARM_MI_REG:
 144        case DA9052_ALARM_H_REG:
 145        case DA9052_ALARM_D_REG:
 146        case DA9052_ALARM_MO_REG:
 147        case DA9052_ALARM_Y_REG:
 148        case DA9052_SECOND_A_REG:
 149        case DA9052_SECOND_B_REG:
 150        case DA9052_SECOND_C_REG:
 151        case DA9052_SECOND_D_REG:
 152        case DA9052_PAGE1_CON_REG:
 153                return true;
 154        default:
 155                return false;
 156        }
 157}
 158
 159static bool da9052_reg_writeable(struct device *dev, unsigned int reg)
 160{
 161        switch (reg) {
 162        case DA9052_PAGE0_CON_REG:
 163        case DA9052_EVENT_A_REG:
 164        case DA9052_EVENT_B_REG:
 165        case DA9052_EVENT_C_REG:
 166        case DA9052_EVENT_D_REG:
 167        case DA9052_IRQ_MASK_A_REG:
 168        case DA9052_IRQ_MASK_B_REG:
 169        case DA9052_IRQ_MASK_C_REG:
 170        case DA9052_IRQ_MASK_D_REG:
 171        case DA9052_CONTROL_A_REG:
 172        case DA9052_CONTROL_B_REG:
 173        case DA9052_CONTROL_C_REG:
 174        case DA9052_CONTROL_D_REG:
 175        case DA9052_PDDIS_REG:
 176        case DA9052_RESET_REG:
 177        case DA9052_GPIO_0_1_REG:
 178        case DA9052_GPIO_2_3_REG:
 179        case DA9052_GPIO_4_5_REG:
 180        case DA9052_GPIO_6_7_REG:
 181        case DA9052_GPIO_14_15_REG:
 182        case DA9052_ID_0_1_REG:
 183        case DA9052_ID_2_3_REG:
 184        case DA9052_ID_4_5_REG:
 185        case DA9052_ID_6_7_REG:
 186        case DA9052_ID_8_9_REG:
 187        case DA9052_ID_10_11_REG:
 188        case DA9052_ID_12_13_REG:
 189        case DA9052_ID_14_15_REG:
 190        case DA9052_ID_16_17_REG:
 191        case DA9052_ID_18_19_REG:
 192        case DA9052_ID_20_21_REG:
 193        case DA9052_SEQ_STATUS_REG:
 194        case DA9052_SEQ_A_REG:
 195        case DA9052_SEQ_B_REG:
 196        case DA9052_SEQ_TIMER_REG:
 197        case DA9052_BUCKA_REG:
 198        case DA9052_BUCKB_REG:
 199        case DA9052_BUCKCORE_REG:
 200        case DA9052_BUCKPRO_REG:
 201        case DA9052_BUCKMEM_REG:
 202        case DA9052_BUCKPERI_REG:
 203        case DA9052_LDO1_REG:
 204        case DA9052_LDO2_REG:
 205        case DA9052_LDO3_REG:
 206        case DA9052_LDO4_REG:
 207        case DA9052_LDO5_REG:
 208        case DA9052_LDO6_REG:
 209        case DA9052_LDO7_REG:
 210        case DA9052_LDO8_REG:
 211        case DA9052_LDO9_REG:
 212        case DA9052_LDO10_REG:
 213        case DA9052_SUPPLY_REG:
 214        case DA9052_PULLDOWN_REG:
 215        case DA9052_CHGBUCK_REG:
 216        case DA9052_WAITCONT_REG:
 217        case DA9052_ISET_REG:
 218        case DA9052_BATCHG_REG:
 219        case DA9052_CHG_CONT_REG:
 220        case DA9052_INPUT_CONT_REG:
 221        case DA9052_BBAT_CONT_REG:
 222        case DA9052_BOOST_REG:
 223        case DA9052_LED_CONT_REG:
 224        case DA9052_LEDMIN123_REG:
 225        case DA9052_LED1_CONF_REG:
 226        case DA9052_LED2_CONF_REG:
 227        case DA9052_LED3_CONF_REG:
 228        case DA9052_LED1CONT_REG:
 229        case DA9052_LED2CONT_REG:
 230        case DA9052_LED3CONT_REG:
 231        case DA9052_LED_CONT_4_REG:
 232        case DA9052_LED_CONT_5_REG:
 233        case DA9052_ADC_MAN_REG:
 234        case DA9052_ADC_CONT_REG:
 235        case DA9052_ADC_RES_L_REG:
 236        case DA9052_ADC_RES_H_REG:
 237        case DA9052_VDD_RES_REG:
 238        case DA9052_VDD_MON_REG:
 239        case DA9052_ICHG_THD_REG:
 240        case DA9052_ICHG_END_REG:
 241        case DA9052_TBAT_HIGHP_REG:
 242        case DA9052_TBAT_HIGHN_REG:
 243        case DA9052_TBAT_LOW_REG:
 244        case DA9052_T_OFFSET_REG:
 245        case DA9052_AUTO4_HIGH_REG:
 246        case DA9052_AUTO4_LOW_REG:
 247        case DA9052_AUTO5_HIGH_REG:
 248        case DA9052_AUTO5_LOW_REG:
 249        case DA9052_AUTO6_HIGH_REG:
 250        case DA9052_AUTO6_LOW_REG:
 251        case DA9052_TSI_CONT_A_REG:
 252        case DA9052_TSI_CONT_B_REG:
 253        case DA9052_COUNT_S_REG:
 254        case DA9052_COUNT_MI_REG:
 255        case DA9052_COUNT_H_REG:
 256        case DA9052_COUNT_D_REG:
 257        case DA9052_COUNT_MO_REG:
 258        case DA9052_COUNT_Y_REG:
 259        case DA9052_ALARM_MI_REG:
 260        case DA9052_ALARM_H_REG:
 261        case DA9052_ALARM_D_REG:
 262        case DA9052_ALARM_MO_REG:
 263        case DA9052_ALARM_Y_REG:
 264        case DA9052_PAGE1_CON_REG:
 265                return true;
 266        default:
 267                return false;
 268        }
 269}
 270
 271static bool da9052_reg_volatile(struct device *dev, unsigned int reg)
 272{
 273        switch (reg) {
 274        case DA9052_STATUS_A_REG:
 275        case DA9052_STATUS_B_REG:
 276        case DA9052_STATUS_C_REG:
 277        case DA9052_STATUS_D_REG:
 278        case DA9052_EVENT_A_REG:
 279        case DA9052_EVENT_B_REG:
 280        case DA9052_EVENT_C_REG:
 281        case DA9052_EVENT_D_REG:
 282        case DA9052_FAULTLOG_REG:
 283        case DA9052_CHG_TIME_REG:
 284        case DA9052_ADC_RES_L_REG:
 285        case DA9052_ADC_RES_H_REG:
 286        case DA9052_VDD_RES_REG:
 287        case DA9052_ICHG_AV_REG:
 288        case DA9052_TBAT_RES_REG:
 289        case DA9052_ADCIN4_RES_REG:
 290        case DA9052_ADCIN5_RES_REG:
 291        case DA9052_ADCIN6_RES_REG:
 292        case DA9052_TJUNC_RES_REG:
 293        case DA9052_TSI_X_MSB_REG:
 294        case DA9052_TSI_Y_MSB_REG:
 295        case DA9052_TSI_LSB_REG:
 296        case DA9052_TSI_Z_MSB_REG:
 297        case DA9052_COUNT_S_REG:
 298        case DA9052_COUNT_MI_REG:
 299        case DA9052_COUNT_H_REG:
 300        case DA9052_COUNT_D_REG:
 301        case DA9052_COUNT_MO_REG:
 302        case DA9052_COUNT_Y_REG:
 303        case DA9052_ALARM_MI_REG:
 304                return true;
 305        default:
 306                return false;
 307        }
 308}
 309
 310/*
 311 * TBAT look-up table is computed from the R90 reg (8 bit register)
 312 * reading as below. The battery temperature is in milliCentigrade
 313 * TBAT = (1/(t1+1/298) - 273) * 1000 mC
 314 * where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255))
 315 * Default values are R25 = 10e3, B = 3380, ITBAT = 50e-6
 316 * Example:
 317 * R25=10E3, B=3380, ITBAT=50e-6, ADCVAL=62d calculates
 318 * TBAT = 20015 mili degrees Centrigrade
 319 *
 320*/
 321static const int32_t tbat_lookup[255] = {
 322        183258, 144221, 124334, 111336, 101826, 94397, 88343, 83257,
 323        78889, 75071, 71688, 68656, 65914, 63414, 61120, 59001,
 324        570366, 55204, 53490, 51881, 50364, 48931, 47574, 46285,
 325        45059, 43889, 42772, 41703, 40678, 39694, 38748, 37838,
 326        36961, 36115, 35297, 34507, 33743, 33002, 32284, 31588,
 327        30911, 30254, 29615, 28994, 28389, 27799, 27225, 26664,
 328        26117, 25584, 25062, 24553, 24054, 23567, 23091, 22624,
 329        22167, 21719, 21281, 20851, 20429, 20015, 19610, 19211,
 330        18820, 18436, 18058, 17688, 17323, 16965, 16612, 16266,
 331        15925, 15589, 15259, 14933, 14613, 14298, 13987, 13681,
 332        13379, 13082, 12788, 12499, 12214, 11933, 11655, 11382,
 333        11112, 10845, 10582, 10322, 10066, 9812, 9562, 9315,
 334        9071, 8830, 8591, 8356, 8123, 7893, 7665, 7440,
 335        7218, 6998, 6780, 6565, 6352, 6141, 5933, 5726,
 336        5522, 5320, 5120, 4922, 4726, 4532, 4340, 4149,
 337        3961, 3774, 3589, 3406, 3225, 3045, 2867, 2690,
 338        2516, 2342, 2170, 2000, 1831, 1664, 1498, 1334,
 339        1171, 1009, 849, 690, 532, 376, 221, 67,
 340        -84, -236, -386, -535, -683, -830, -975, -1119,
 341        -1263, -1405, -1546, -1686, -1825, -1964, -2101, -2237,
 342        -2372, -2506, -2639, -2771, -2902, -3033, -3162, -3291,
 343        -3418, -3545, -3671, -3796, -3920, -4044, -4166, -4288,
 344        -4409, -4529, -4649, -4767, -4885, -5002, -5119, -5235,
 345        -5349, -5464, -5577, -5690, -5802, -5913, -6024, -6134,
 346        -6244, -6352, -6461, -6568, -6675, -6781, -6887, -6992,
 347        -7096, -7200, -7303, -7406, -7508, -7609, -7710, -7810,
 348        -7910, -8009, -8108, -8206, -8304, -8401, -8497, -8593,
 349        -8689, -8784, -8878, -8972, -9066, -9159, -9251, -9343,
 350        -9435, -9526, -9617, -9707, -9796, -9886, -9975, -10063,
 351        -10151, -10238, -10325, -10412, -10839, -10923, -11007, -11090,
 352        -11173, -11256, -11338, -11420, -11501, -11583, -11663, -11744,
 353        -11823, -11903, -11982
 354};
 355
 356static const u8 chan_mux[DA9052_ADC_VBBAT + 1] = {
 357        [DA9052_ADC_VDDOUT]     = DA9052_ADC_MAN_MUXSEL_VDDOUT,
 358        [DA9052_ADC_ICH]        = DA9052_ADC_MAN_MUXSEL_ICH,
 359        [DA9052_ADC_TBAT]       = DA9052_ADC_MAN_MUXSEL_TBAT,
 360        [DA9052_ADC_VBAT]       = DA9052_ADC_MAN_MUXSEL_VBAT,
 361        [DA9052_ADC_IN4]        = DA9052_ADC_MAN_MUXSEL_AD4,
 362        [DA9052_ADC_IN5]        = DA9052_ADC_MAN_MUXSEL_AD5,
 363        [DA9052_ADC_IN6]        = DA9052_ADC_MAN_MUXSEL_AD6,
 364        [DA9052_ADC_VBBAT]      = DA9052_ADC_MAN_MUXSEL_VBBAT
 365};
 366
 367int da9052_adc_manual_read(struct da9052 *da9052, unsigned char channel)
 368{
 369        int ret;
 370        unsigned short calc_data;
 371        unsigned short data;
 372        unsigned char mux_sel;
 373
 374        if (channel > DA9052_ADC_VBBAT)
 375                return -EINVAL;
 376
 377        mutex_lock(&da9052->auxadc_lock);
 378
 379        /* Channel gets activated on enabling the Conversion bit */
 380        mux_sel = chan_mux[channel] | DA9052_ADC_MAN_MAN_CONV;
 381
 382        ret = da9052_reg_write(da9052, DA9052_ADC_MAN_REG, mux_sel);
 383        if (ret < 0)
 384                goto err;
 385
 386        /* Wait for an interrupt */
 387        if (!wait_for_completion_timeout(&da9052->done,
 388                                         msecs_to_jiffies(500))) {
 389                dev_err(da9052->dev,
 390                        "timeout waiting for ADC conversion interrupt\n");
 391                ret = -ETIMEDOUT;
 392                goto err;
 393        }
 394
 395        ret = da9052_reg_read(da9052, DA9052_ADC_RES_H_REG);
 396        if (ret < 0)
 397                goto err;
 398
 399        calc_data = (unsigned short)ret;
 400        data = calc_data << 2;
 401
 402        ret = da9052_reg_read(da9052, DA9052_ADC_RES_L_REG);
 403        if (ret < 0)
 404                goto err;
 405
 406        calc_data = (unsigned short)(ret & DA9052_ADC_RES_LSB);
 407        data |= calc_data;
 408
 409        ret = data;
 410
 411err:
 412        mutex_unlock(&da9052->auxadc_lock);
 413        return ret;
 414}
 415EXPORT_SYMBOL_GPL(da9052_adc_manual_read);
 416
 417int da9052_adc_read_temp(struct da9052 *da9052)
 418{
 419        int tbat;
 420
 421        tbat = da9052_reg_read(da9052, DA9052_TBAT_RES_REG);
 422        if (tbat <= 0)
 423                return tbat;
 424
 425        /* ARRAY_SIZE check is not needed since TBAT is a 8-bit register */
 426        return tbat_lookup[tbat - 1];
 427}
 428EXPORT_SYMBOL_GPL(da9052_adc_read_temp);
 429
 430static struct mfd_cell da9052_subdev_info[] = {
 431        {
 432                .name = "da9052-regulator",
 433                .id = 1,
 434        },
 435        {
 436                .name = "da9052-regulator",
 437                .id = 2,
 438        },
 439        {
 440                .name = "da9052-regulator",
 441                .id = 3,
 442        },
 443        {
 444                .name = "da9052-regulator",
 445                .id = 4,
 446        },
 447        {
 448                .name = "da9052-regulator",
 449                .id = 5,
 450        },
 451        {
 452                .name = "da9052-regulator",
 453                .id = 6,
 454        },
 455        {
 456                .name = "da9052-regulator",
 457                .id = 7,
 458        },
 459        {
 460                .name = "da9052-regulator",
 461                .id = 8,
 462        },
 463        {
 464                .name = "da9052-regulator",
 465                .id = 9,
 466        },
 467        {
 468                .name = "da9052-regulator",
 469                .id = 10,
 470        },
 471        {
 472                .name = "da9052-regulator",
 473                .id = 11,
 474        },
 475        {
 476                .name = "da9052-regulator",
 477                .id = 12,
 478        },
 479        {
 480                .name = "da9052-regulator",
 481                .id = 13,
 482        },
 483        {
 484                .name = "da9052-regulator",
 485                .id = 14,
 486        },
 487        {
 488                .name = "da9052-onkey",
 489        },
 490        {
 491                .name = "da9052-rtc",
 492        },
 493        {
 494                .name = "da9052-gpio",
 495        },
 496        {
 497                .name = "da9052-hwmon",
 498        },
 499        {
 500                .name = "da9052-leds",
 501        },
 502        {
 503                .name = "da9052-wled1",
 504        },
 505        {
 506                .name = "da9052-wled2",
 507        },
 508        {
 509                .name = "da9052-wled3",
 510        },
 511        {
 512                .name = "da9052-tsi",
 513        },
 514        {
 515                .name = "da9052-bat",
 516        },
 517        {
 518                .name = "da9052-watchdog",
 519        },
 520};
 521
 522struct regmap_config da9052_regmap_config = {
 523        .reg_bits = 8,
 524        .val_bits = 8,
 525
 526        .cache_type = REGCACHE_RBTREE,
 527
 528        .max_register = DA9052_PAGE1_CON_REG,
 529        .readable_reg = da9052_reg_readable,
 530        .writeable_reg = da9052_reg_writeable,
 531        .volatile_reg = da9052_reg_volatile,
 532};
 533EXPORT_SYMBOL_GPL(da9052_regmap_config);
 534
 535int da9052_device_init(struct da9052 *da9052, u8 chip_id)
 536{
 537        struct da9052_pdata *pdata = da9052->dev->platform_data;
 538        int ret;
 539
 540        mutex_init(&da9052->auxadc_lock);
 541        init_completion(&da9052->done);
 542
 543        if (pdata && pdata->init != NULL)
 544                pdata->init(da9052);
 545
 546        da9052->chip_id = chip_id;
 547
 548        ret = da9052_irq_init(da9052);
 549        if (ret != 0) {
 550                dev_err(da9052->dev, "da9052_irq_init failed: %d\n", ret);
 551                return ret;
 552        }
 553
 554        ret = mfd_add_devices(da9052->dev, -1, da9052_subdev_info,
 555                              ARRAY_SIZE(da9052_subdev_info), NULL, 0, NULL);
 556        if (ret) {
 557                dev_err(da9052->dev, "mfd_add_devices failed: %d\n", ret);
 558                goto err;
 559        }
 560
 561        return 0;
 562
 563err:
 564        da9052_irq_exit(da9052);
 565
 566        return ret;
 567}
 568
 569void da9052_device_exit(struct da9052 *da9052)
 570{
 571        mfd_remove_devices(da9052->dev);
 572        da9052_irq_exit(da9052);
 573}
 574
 575MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
 576MODULE_DESCRIPTION("DA9052 MFD Core");
 577MODULE_LICENSE("GPL");
 578
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