linux/drivers/mfd/da9052-core.c
<<
>>
Prefs
   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#include <linux/property.h>
  22
  23#include <linux/mfd/da9052/da9052.h>
  24#include <linux/mfd/da9052/pdata.h>
  25#include <linux/mfd/da9052/reg.h>
  26
  27static bool da9052_reg_readable(struct device *dev, unsigned int reg)
  28{
  29        switch (reg) {
  30        case DA9052_PAGE0_CON_REG:
  31        case DA9052_STATUS_A_REG:
  32        case DA9052_STATUS_B_REG:
  33        case DA9052_STATUS_C_REG:
  34        case DA9052_STATUS_D_REG:
  35        case DA9052_EVENT_A_REG:
  36        case DA9052_EVENT_B_REG:
  37        case DA9052_EVENT_C_REG:
  38        case DA9052_EVENT_D_REG:
  39        case DA9052_FAULTLOG_REG:
  40        case DA9052_IRQ_MASK_A_REG:
  41        case DA9052_IRQ_MASK_B_REG:
  42        case DA9052_IRQ_MASK_C_REG:
  43        case DA9052_IRQ_MASK_D_REG:
  44        case DA9052_CONTROL_A_REG:
  45        case DA9052_CONTROL_B_REG:
  46        case DA9052_CONTROL_C_REG:
  47        case DA9052_CONTROL_D_REG:
  48        case DA9052_PDDIS_REG:
  49        case DA9052_INTERFACE_REG:
  50        case DA9052_RESET_REG:
  51        case DA9052_GPIO_0_1_REG:
  52        case DA9052_GPIO_2_3_REG:
  53        case DA9052_GPIO_4_5_REG:
  54        case DA9052_GPIO_6_7_REG:
  55        case DA9052_GPIO_8_9_REG:
  56        case DA9052_GPIO_10_11_REG:
  57        case DA9052_GPIO_12_13_REG:
  58        case DA9052_GPIO_14_15_REG:
  59        case DA9052_ID_0_1_REG:
  60        case DA9052_ID_2_3_REG:
  61        case DA9052_ID_4_5_REG:
  62        case DA9052_ID_6_7_REG:
  63        case DA9052_ID_8_9_REG:
  64        case DA9052_ID_10_11_REG:
  65        case DA9052_ID_12_13_REG:
  66        case DA9052_ID_14_15_REG:
  67        case DA9052_ID_16_17_REG:
  68        case DA9052_ID_18_19_REG:
  69        case DA9052_ID_20_21_REG:
  70        case DA9052_SEQ_STATUS_REG:
  71        case DA9052_SEQ_A_REG:
  72        case DA9052_SEQ_B_REG:
  73        case DA9052_SEQ_TIMER_REG:
  74        case DA9052_BUCKA_REG:
  75        case DA9052_BUCKB_REG:
  76        case DA9052_BUCKCORE_REG:
  77        case DA9052_BUCKPRO_REG:
  78        case DA9052_BUCKMEM_REG:
  79        case DA9052_BUCKPERI_REG:
  80        case DA9052_LDO1_REG:
  81        case DA9052_LDO2_REG:
  82        case DA9052_LDO3_REG:
  83        case DA9052_LDO4_REG:
  84        case DA9052_LDO5_REG:
  85        case DA9052_LDO6_REG:
  86        case DA9052_LDO7_REG:
  87        case DA9052_LDO8_REG:
  88        case DA9052_LDO9_REG:
  89        case DA9052_LDO10_REG:
  90        case DA9052_SUPPLY_REG:
  91        case DA9052_PULLDOWN_REG:
  92        case DA9052_CHGBUCK_REG:
  93        case DA9052_WAITCONT_REG:
  94        case DA9052_ISET_REG:
  95        case DA9052_BATCHG_REG:
  96        case DA9052_CHG_CONT_REG:
  97        case DA9052_INPUT_CONT_REG:
  98        case DA9052_CHG_TIME_REG:
  99        case DA9052_BBAT_CONT_REG:
 100        case DA9052_BOOST_REG:
 101        case DA9052_LED_CONT_REG:
 102        case DA9052_LEDMIN123_REG:
 103        case DA9052_LED1_CONF_REG:
 104        case DA9052_LED2_CONF_REG:
 105        case DA9052_LED3_CONF_REG:
 106        case DA9052_LED1CONT_REG:
 107        case DA9052_LED2CONT_REG:
 108        case DA9052_LED3CONT_REG:
 109        case DA9052_LED_CONT_4_REG:
 110        case DA9052_LED_CONT_5_REG:
 111        case DA9052_ADC_MAN_REG:
 112        case DA9052_ADC_CONT_REG:
 113        case DA9052_ADC_RES_L_REG:
 114        case DA9052_ADC_RES_H_REG:
 115        case DA9052_VDD_RES_REG:
 116        case DA9052_VDD_MON_REG:
 117        case DA9052_ICHG_AV_REG:
 118        case DA9052_ICHG_THD_REG:
 119        case DA9052_ICHG_END_REG:
 120        case DA9052_TBAT_RES_REG:
 121        case DA9052_TBAT_HIGHP_REG:
 122        case DA9052_TBAT_HIGHN_REG:
 123        case DA9052_TBAT_LOW_REG:
 124        case DA9052_T_OFFSET_REG:
 125        case DA9052_ADCIN4_RES_REG:
 126        case DA9052_AUTO4_HIGH_REG:
 127        case DA9052_AUTO4_LOW_REG:
 128        case DA9052_ADCIN5_RES_REG:
 129        case DA9052_AUTO5_HIGH_REG:
 130        case DA9052_AUTO5_LOW_REG:
 131        case DA9052_ADCIN6_RES_REG:
 132        case DA9052_AUTO6_HIGH_REG:
 133        case DA9052_AUTO6_LOW_REG:
 134        case DA9052_TJUNC_RES_REG:
 135        case DA9052_TSI_CONT_A_REG:
 136        case DA9052_TSI_CONT_B_REG:
 137        case DA9052_TSI_X_MSB_REG:
 138        case DA9052_TSI_Y_MSB_REG:
 139        case DA9052_TSI_LSB_REG:
 140        case DA9052_TSI_Z_MSB_REG:
 141        case DA9052_COUNT_S_REG:
 142        case DA9052_COUNT_MI_REG:
 143        case DA9052_COUNT_H_REG:
 144        case DA9052_COUNT_D_REG:
 145        case DA9052_COUNT_MO_REG:
 146        case DA9052_COUNT_Y_REG:
 147        case DA9052_ALARM_MI_REG:
 148        case DA9052_ALARM_H_REG:
 149        case DA9052_ALARM_D_REG:
 150        case DA9052_ALARM_MO_REG:
 151        case DA9052_ALARM_Y_REG:
 152        case DA9052_SECOND_A_REG:
 153        case DA9052_SECOND_B_REG:
 154        case DA9052_SECOND_C_REG:
 155        case DA9052_SECOND_D_REG:
 156        case DA9052_PAGE1_CON_REG:
 157                return true;
 158        default:
 159                return false;
 160        }
 161}
 162
 163static bool da9052_reg_writeable(struct device *dev, unsigned int reg)
 164{
 165        switch (reg) {
 166        case DA9052_PAGE0_CON_REG:
 167        case DA9052_EVENT_A_REG:
 168        case DA9052_EVENT_B_REG:
 169        case DA9052_EVENT_C_REG:
 170        case DA9052_EVENT_D_REG:
 171        case DA9052_FAULTLOG_REG:
 172        case DA9052_IRQ_MASK_A_REG:
 173        case DA9052_IRQ_MASK_B_REG:
 174        case DA9052_IRQ_MASK_C_REG:
 175        case DA9052_IRQ_MASK_D_REG:
 176        case DA9052_CONTROL_A_REG:
 177        case DA9052_CONTROL_B_REG:
 178        case DA9052_CONTROL_C_REG:
 179        case DA9052_CONTROL_D_REG:
 180        case DA9052_PDDIS_REG:
 181        case DA9052_RESET_REG:
 182        case DA9052_GPIO_0_1_REG:
 183        case DA9052_GPIO_2_3_REG:
 184        case DA9052_GPIO_4_5_REG:
 185        case DA9052_GPIO_6_7_REG:
 186        case DA9052_GPIO_8_9_REG:
 187        case DA9052_GPIO_10_11_REG:
 188        case DA9052_GPIO_12_13_REG:
 189        case DA9052_GPIO_14_15_REG:
 190        case DA9052_ID_0_1_REG:
 191        case DA9052_ID_2_3_REG:
 192        case DA9052_ID_4_5_REG:
 193        case DA9052_ID_6_7_REG:
 194        case DA9052_ID_8_9_REG:
 195        case DA9052_ID_10_11_REG:
 196        case DA9052_ID_12_13_REG:
 197        case DA9052_ID_14_15_REG:
 198        case DA9052_ID_16_17_REG:
 199        case DA9052_ID_18_19_REG:
 200        case DA9052_ID_20_21_REG:
 201        case DA9052_SEQ_STATUS_REG:
 202        case DA9052_SEQ_A_REG:
 203        case DA9052_SEQ_B_REG:
 204        case DA9052_SEQ_TIMER_REG:
 205        case DA9052_BUCKA_REG:
 206        case DA9052_BUCKB_REG:
 207        case DA9052_BUCKCORE_REG:
 208        case DA9052_BUCKPRO_REG:
 209        case DA9052_BUCKMEM_REG:
 210        case DA9052_BUCKPERI_REG:
 211        case DA9052_LDO1_REG:
 212        case DA9052_LDO2_REG:
 213        case DA9052_LDO3_REG:
 214        case DA9052_LDO4_REG:
 215        case DA9052_LDO5_REG:
 216        case DA9052_LDO6_REG:
 217        case DA9052_LDO7_REG:
 218        case DA9052_LDO8_REG:
 219        case DA9052_LDO9_REG:
 220        case DA9052_LDO10_REG:
 221        case DA9052_SUPPLY_REG:
 222        case DA9052_PULLDOWN_REG:
 223        case DA9052_CHGBUCK_REG:
 224        case DA9052_WAITCONT_REG:
 225        case DA9052_ISET_REG:
 226        case DA9052_BATCHG_REG:
 227        case DA9052_CHG_CONT_REG:
 228        case DA9052_INPUT_CONT_REG:
 229        case DA9052_BBAT_CONT_REG:
 230        case DA9052_BOOST_REG:
 231        case DA9052_LED_CONT_REG:
 232        case DA9052_LEDMIN123_REG:
 233        case DA9052_LED1_CONF_REG:
 234        case DA9052_LED2_CONF_REG:
 235        case DA9052_LED3_CONF_REG:
 236        case DA9052_LED1CONT_REG:
 237        case DA9052_LED2CONT_REG:
 238        case DA9052_LED3CONT_REG:
 239        case DA9052_LED_CONT_4_REG:
 240        case DA9052_LED_CONT_5_REG:
 241        case DA9052_ADC_MAN_REG:
 242        case DA9052_ADC_CONT_REG:
 243        case DA9052_ADC_RES_L_REG:
 244        case DA9052_ADC_RES_H_REG:
 245        case DA9052_VDD_RES_REG:
 246        case DA9052_VDD_MON_REG:
 247        case DA9052_ICHG_THD_REG:
 248        case DA9052_ICHG_END_REG:
 249        case DA9052_TBAT_HIGHP_REG:
 250        case DA9052_TBAT_HIGHN_REG:
 251        case DA9052_TBAT_LOW_REG:
 252        case DA9052_T_OFFSET_REG:
 253        case DA9052_AUTO4_HIGH_REG:
 254        case DA9052_AUTO4_LOW_REG:
 255        case DA9052_AUTO5_HIGH_REG:
 256        case DA9052_AUTO5_LOW_REG:
 257        case DA9052_AUTO6_HIGH_REG:
 258        case DA9052_AUTO6_LOW_REG:
 259        case DA9052_TSI_CONT_A_REG:
 260        case DA9052_TSI_CONT_B_REG:
 261        case DA9052_COUNT_S_REG:
 262        case DA9052_COUNT_MI_REG:
 263        case DA9052_COUNT_H_REG:
 264        case DA9052_COUNT_D_REG:
 265        case DA9052_COUNT_MO_REG:
 266        case DA9052_COUNT_Y_REG:
 267        case DA9052_ALARM_MI_REG:
 268        case DA9052_ALARM_H_REG:
 269        case DA9052_ALARM_D_REG:
 270        case DA9052_ALARM_MO_REG:
 271        case DA9052_ALARM_Y_REG:
 272        case DA9052_PAGE1_CON_REG:
 273                return true;
 274        default:
 275                return false;
 276        }
 277}
 278
 279static bool da9052_reg_volatile(struct device *dev, unsigned int reg)
 280{
 281        switch (reg) {
 282        case DA9052_STATUS_A_REG:
 283        case DA9052_STATUS_B_REG:
 284        case DA9052_STATUS_C_REG:
 285        case DA9052_STATUS_D_REG:
 286        case DA9052_EVENT_A_REG:
 287        case DA9052_EVENT_B_REG:
 288        case DA9052_EVENT_C_REG:
 289        case DA9052_EVENT_D_REG:
 290        case DA9052_CONTROL_B_REG:
 291        case DA9052_CONTROL_D_REG:
 292        case DA9052_SUPPLY_REG:
 293        case DA9052_FAULTLOG_REG:
 294        case DA9052_CHG_TIME_REG:
 295        case DA9052_ADC_RES_L_REG:
 296        case DA9052_ADC_RES_H_REG:
 297        case DA9052_VDD_RES_REG:
 298        case DA9052_ICHG_AV_REG:
 299        case DA9052_TBAT_RES_REG:
 300        case DA9052_ADCIN4_RES_REG:
 301        case DA9052_ADCIN5_RES_REG:
 302        case DA9052_ADCIN6_RES_REG:
 303        case DA9052_TJUNC_RES_REG:
 304        case DA9052_TSI_X_MSB_REG:
 305        case DA9052_TSI_Y_MSB_REG:
 306        case DA9052_TSI_LSB_REG:
 307        case DA9052_TSI_Z_MSB_REG:
 308        case DA9052_COUNT_S_REG:
 309        case DA9052_COUNT_MI_REG:
 310        case DA9052_COUNT_H_REG:
 311        case DA9052_COUNT_D_REG:
 312        case DA9052_COUNT_MO_REG:
 313        case DA9052_COUNT_Y_REG:
 314        case DA9052_ALARM_MI_REG:
 315                return true;
 316        default:
 317                return false;
 318        }
 319}
 320
 321/*
 322 * TBAT look-up table is computed from the R90 reg (8 bit register)
 323 * reading as below. The battery temperature is in milliCentigrade
 324 * TBAT = (1/(t1+1/298) - 273) * 1000 mC
 325 * where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255))
 326 * Default values are R25 = 10e3, B = 3380, ITBAT = 50e-6
 327 * Example:
 328 * R25=10E3, B=3380, ITBAT=50e-6, ADCVAL=62d calculates
 329 * TBAT = 20015 mili degrees Centrigrade
 330 *
 331*/
 332static const int32_t tbat_lookup[255] = {
 333        183258, 144221, 124334, 111336, 101826, 94397, 88343, 83257,
 334        78889, 75071, 71688, 68656, 65914, 63414, 61120, 59001,
 335        570366, 55204, 53490, 51881, 50364, 48931, 47574, 46285,
 336        45059, 43889, 42772, 41703, 40678, 39694, 38748, 37838,
 337        36961, 36115, 35297, 34507, 33743, 33002, 32284, 31588,
 338        30911, 30254, 29615, 28994, 28389, 27799, 27225, 26664,
 339        26117, 25584, 25062, 24553, 24054, 23567, 23091, 22624,
 340        22167, 21719, 21281, 20851, 20429, 20015, 19610, 19211,
 341        18820, 18436, 18058, 17688, 17323, 16965, 16612, 16266,
 342        15925, 15589, 15259, 14933, 14613, 14298, 13987, 13681,
 343        13379, 13082, 12788, 12499, 12214, 11933, 11655, 11382,
 344        11112, 10845, 10582, 10322, 10066, 9812, 9562, 9315,
 345        9071, 8830, 8591, 8356, 8123, 7893, 7665, 7440,
 346        7218, 6998, 6780, 6565, 6352, 6141, 5933, 5726,
 347        5522, 5320, 5120, 4922, 4726, 4532, 4340, 4149,
 348        3961, 3774, 3589, 3406, 3225, 3045, 2867, 2690,
 349        2516, 2342, 2170, 2000, 1831, 1664, 1498, 1334,
 350        1171, 1009, 849, 690, 532, 376, 221, 67,
 351        -84, -236, -386, -535, -683, -830, -975, -1119,
 352        -1263, -1405, -1546, -1686, -1825, -1964, -2101, -2237,
 353        -2372, -2506, -2639, -2771, -2902, -3033, -3162, -3291,
 354        -3418, -3545, -3671, -3796, -3920, -4044, -4166, -4288,
 355        -4409, -4529, -4649, -4767, -4885, -5002, -5119, -5235,
 356        -5349, -5464, -5577, -5690, -5802, -5913, -6024, -6134,
 357        -6244, -6352, -6461, -6568, -6675, -6781, -6887, -6992,
 358        -7096, -7200, -7303, -7406, -7508, -7609, -7710, -7810,
 359        -7910, -8009, -8108, -8206, -8304, -8401, -8497, -8593,
 360        -8689, -8784, -8878, -8972, -9066, -9159, -9251, -9343,
 361        -9435, -9526, -9617, -9707, -9796, -9886, -9975, -10063,
 362        -10151, -10238, -10325, -10412, -10839, -10923, -11007, -11090,
 363        -11173, -11256, -11338, -11420, -11501, -11583, -11663, -11744,
 364        -11823, -11903, -11982
 365};
 366
 367static const u8 chan_mux[DA9052_ADC_VBBAT + 1] = {
 368        [DA9052_ADC_VDDOUT]     = DA9052_ADC_MAN_MUXSEL_VDDOUT,
 369        [DA9052_ADC_ICH]        = DA9052_ADC_MAN_MUXSEL_ICH,
 370        [DA9052_ADC_TBAT]       = DA9052_ADC_MAN_MUXSEL_TBAT,
 371        [DA9052_ADC_VBAT]       = DA9052_ADC_MAN_MUXSEL_VBAT,
 372        [DA9052_ADC_IN4]        = DA9052_ADC_MAN_MUXSEL_AD4,
 373        [DA9052_ADC_IN5]        = DA9052_ADC_MAN_MUXSEL_AD5,
 374        [DA9052_ADC_IN6]        = DA9052_ADC_MAN_MUXSEL_AD6,
 375        [DA9052_ADC_VBBAT]      = DA9052_ADC_MAN_MUXSEL_VBBAT
 376};
 377
 378int da9052_adc_manual_read(struct da9052 *da9052, unsigned char channel)
 379{
 380        int ret;
 381        unsigned short calc_data;
 382        unsigned short data;
 383        unsigned char mux_sel;
 384
 385        if (channel > DA9052_ADC_VBBAT)
 386                return -EINVAL;
 387
 388        mutex_lock(&da9052->auxadc_lock);
 389
 390        reinit_completion(&da9052->done);
 391
 392        /* Channel gets activated on enabling the Conversion bit */
 393        mux_sel = chan_mux[channel] | DA9052_ADC_MAN_MAN_CONV;
 394
 395        ret = da9052_reg_write(da9052, DA9052_ADC_MAN_REG, mux_sel);
 396        if (ret < 0)
 397                goto err;
 398
 399        /* Wait for an interrupt */
 400        if (!wait_for_completion_timeout(&da9052->done,
 401                                         msecs_to_jiffies(500))) {
 402                dev_err(da9052->dev,
 403                        "timeout waiting for ADC conversion interrupt\n");
 404                ret = -ETIMEDOUT;
 405                goto err;
 406        }
 407
 408        ret = da9052_reg_read(da9052, DA9052_ADC_RES_H_REG);
 409        if (ret < 0)
 410                goto err;
 411
 412        calc_data = (unsigned short)ret;
 413        data = calc_data << 2;
 414
 415        ret = da9052_reg_read(da9052, DA9052_ADC_RES_L_REG);
 416        if (ret < 0)
 417                goto err;
 418
 419        calc_data = (unsigned short)(ret & DA9052_ADC_RES_LSB);
 420        data |= calc_data;
 421
 422        ret = data;
 423
 424err:
 425        mutex_unlock(&da9052->auxadc_lock);
 426        return ret;
 427}
 428EXPORT_SYMBOL_GPL(da9052_adc_manual_read);
 429
 430int da9052_adc_read_temp(struct da9052 *da9052)
 431{
 432        int tbat;
 433
 434        tbat = da9052_reg_read(da9052, DA9052_TBAT_RES_REG);
 435        if (tbat <= 0)
 436                return tbat;
 437
 438        /* ARRAY_SIZE check is not needed since TBAT is a 8-bit register */
 439        return tbat_lookup[tbat - 1];
 440}
 441EXPORT_SYMBOL_GPL(da9052_adc_read_temp);
 442
 443static const struct mfd_cell da9052_subdev_info[] = {
 444        {
 445                .name = "da9052-regulator",
 446                .id = 0,
 447        },
 448        {
 449                .name = "da9052-regulator",
 450                .id = 1,
 451        },
 452        {
 453                .name = "da9052-regulator",
 454                .id = 2,
 455        },
 456        {
 457                .name = "da9052-regulator",
 458                .id = 3,
 459        },
 460        {
 461                .name = "da9052-regulator",
 462                .id = 4,
 463        },
 464        {
 465                .name = "da9052-regulator",
 466                .id = 5,
 467        },
 468        {
 469                .name = "da9052-regulator",
 470                .id = 6,
 471        },
 472        {
 473                .name = "da9052-regulator",
 474                .id = 7,
 475        },
 476        {
 477                .name = "da9052-regulator",
 478                .id = 8,
 479        },
 480        {
 481                .name = "da9052-regulator",
 482                .id = 9,
 483        },
 484        {
 485                .name = "da9052-regulator",
 486                .id = 10,
 487        },
 488        {
 489                .name = "da9052-regulator",
 490                .id = 11,
 491        },
 492        {
 493                .name = "da9052-regulator",
 494                .id = 12,
 495        },
 496        {
 497                .name = "da9052-regulator",
 498                .id = 13,
 499        },
 500        {
 501                .name = "da9052-onkey",
 502        },
 503        {
 504                .name = "da9052-rtc",
 505        },
 506        {
 507                .name = "da9052-gpio",
 508        },
 509        {
 510                .name = "da9052-hwmon",
 511        },
 512        {
 513                .name = "da9052-leds",
 514        },
 515        {
 516                .name = "da9052-wled1",
 517        },
 518        {
 519                .name = "da9052-wled2",
 520        },
 521        {
 522                .name = "da9052-wled3",
 523        },
 524        {
 525                .name = "da9052-bat",
 526        },
 527        {
 528                .name = "da9052-watchdog",
 529        },
 530};
 531
 532static const struct mfd_cell da9052_tsi_subdev_info[] = {
 533        { .name = "da9052-tsi" },
 534};
 535
 536const struct regmap_config da9052_regmap_config = {
 537        .reg_bits = 8,
 538        .val_bits = 8,
 539
 540        .cache_type = REGCACHE_RBTREE,
 541
 542        .max_register = DA9052_PAGE1_CON_REG,
 543        .readable_reg = da9052_reg_readable,
 544        .writeable_reg = da9052_reg_writeable,
 545        .volatile_reg = da9052_reg_volatile,
 546};
 547EXPORT_SYMBOL_GPL(da9052_regmap_config);
 548
 549static int da9052_clear_fault_log(struct da9052 *da9052)
 550{
 551        int ret = 0;
 552        int fault_log = 0;
 553
 554        fault_log = da9052_reg_read(da9052, DA9052_FAULTLOG_REG);
 555        if (fault_log < 0) {
 556                dev_err(da9052->dev,
 557                        "Cannot read FAULT_LOG %d\n", fault_log);
 558                return fault_log;
 559        }
 560
 561        if (fault_log) {
 562                if (fault_log & DA9052_FAULTLOG_TWDERROR)
 563                        dev_dbg(da9052->dev,
 564                                "Fault log entry detected: TWD_ERROR\n");
 565                if (fault_log & DA9052_FAULTLOG_VDDFAULT)
 566                        dev_dbg(da9052->dev,
 567                                "Fault log entry detected: VDD_FAULT\n");
 568                if (fault_log & DA9052_FAULTLOG_VDDSTART)
 569                        dev_dbg(da9052->dev,
 570                                "Fault log entry detected: VDD_START\n");
 571                if (fault_log & DA9052_FAULTLOG_TEMPOVER)
 572                        dev_dbg(da9052->dev,
 573                                "Fault log entry detected: TEMP_OVER\n");
 574                if (fault_log & DA9052_FAULTLOG_KEYSHUT)
 575                        dev_dbg(da9052->dev,
 576                                "Fault log entry detected: KEY_SHUT\n");
 577                if (fault_log & DA9052_FAULTLOG_NSDSET)
 578                        dev_dbg(da9052->dev,
 579                                "Fault log entry detected: nSD_SHUT\n");
 580                if (fault_log & DA9052_FAULTLOG_WAITSET)
 581                        dev_dbg(da9052->dev,
 582                                "Fault log entry detected: WAIT_SHUT\n");
 583
 584                ret = da9052_reg_write(da9052,
 585                                        DA9052_FAULTLOG_REG,
 586                                        0xFF);
 587                if (ret < 0)
 588                        dev_err(da9052->dev,
 589                                "Cannot reset FAULT_LOG values %d\n", ret);
 590        }
 591
 592        return ret;
 593}
 594
 595int da9052_device_init(struct da9052 *da9052, u8 chip_id)
 596{
 597        struct da9052_pdata *pdata = dev_get_platdata(da9052->dev);
 598        int ret;
 599
 600        mutex_init(&da9052->auxadc_lock);
 601        init_completion(&da9052->done);
 602
 603        ret = da9052_clear_fault_log(da9052);
 604        if (ret < 0)
 605                dev_warn(da9052->dev, "Cannot clear FAULT_LOG\n");
 606
 607        if (pdata && pdata->init != NULL)
 608                pdata->init(da9052);
 609
 610        da9052->chip_id = chip_id;
 611
 612        ret = da9052_irq_init(da9052);
 613        if (ret != 0) {
 614                dev_err(da9052->dev, "da9052_irq_init failed: %d\n", ret);
 615                return ret;
 616        }
 617
 618        ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO,
 619                              da9052_subdev_info,
 620                              ARRAY_SIZE(da9052_subdev_info), NULL, 0, NULL);
 621        if (ret) {
 622                dev_err(da9052->dev, "mfd_add_devices failed: %d\n", ret);
 623                goto err;
 624        }
 625
 626        /*
 627         * Check if touchscreen pins are used are analogue input instead
 628         * of having a touchscreen connected to them. The analogue input
 629         * functionality will be provided by hwmon driver (if enabled).
 630         */
 631        if (!device_property_read_bool(da9052->dev, "dlg,tsi-as-adc")) {
 632                ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO,
 633                                      da9052_tsi_subdev_info,
 634                                      ARRAY_SIZE(da9052_tsi_subdev_info),
 635                                      NULL, 0, NULL);
 636                if (ret) {
 637                        dev_err(da9052->dev, "failed to add TSI subdev: %d\n",
 638                                ret);
 639                        goto err;
 640                }
 641        }
 642
 643        return 0;
 644
 645err:
 646        mfd_remove_devices(da9052->dev);
 647        da9052_irq_exit(da9052);
 648
 649        return ret;
 650}
 651
 652void da9052_device_exit(struct da9052 *da9052)
 653{
 654        mfd_remove_devices(da9052->dev);
 655        da9052_irq_exit(da9052);
 656}
 657
 658MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
 659MODULE_DESCRIPTION("DA9052 MFD Core");
 660MODULE_LICENSE("GPL");
 661