linux/drivers/mfd/rohm-bd71828.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2//
   3// Copyright (C) 2019 ROHM Semiconductors
   4//
   5// ROHM BD71828/BD71815 PMIC driver
   6
   7#include <linux/gpio_keys.h>
   8#include <linux/i2c.h>
   9#include <linux/input.h>
  10#include <linux/interrupt.h>
  11#include <linux/ioport.h>
  12#include <linux/irq.h>
  13#include <linux/mfd/core.h>
  14#include <linux/mfd/rohm-bd71815.h>
  15#include <linux/mfd/rohm-bd71828.h>
  16#include <linux/mfd/rohm-generic.h>
  17#include <linux/module.h>
  18#include <linux/of_device.h>
  19#include <linux/regmap.h>
  20#include <linux/types.h>
  21
  22static struct gpio_keys_button button = {
  23        .code = KEY_POWER,
  24        .gpio = -1,
  25        .type = EV_KEY,
  26};
  27
  28static struct gpio_keys_platform_data bd71828_powerkey_data = {
  29        .buttons = &button,
  30        .nbuttons = 1,
  31        .name = "bd71828-pwrkey",
  32};
  33
  34static const struct resource bd71815_rtc_irqs[] = {
  35        DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC0, "bd71815-rtc-alm-0"),
  36        DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC1, "bd71815-rtc-alm-1"),
  37        DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC2, "bd71815-rtc-alm-2"),
  38};
  39
  40static const struct resource bd71828_rtc_irqs[] = {
  41        DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC0, "bd71828-rtc-alm-0"),
  42        DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC1, "bd71828-rtc-alm-1"),
  43        DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC2, "bd71828-rtc-alm-2"),
  44};
  45
  46static struct resource bd71815_power_irqs[] = {
  47        DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_RMV, "bd71815-dcin-rmv"),
  48        DEFINE_RES_IRQ_NAMED(BD71815_INT_CLPS_OUT, "bd71815-clps-out"),
  49        DEFINE_RES_IRQ_NAMED(BD71815_INT_CLPS_IN, "bd71815-clps-in"),
  50        DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_OVP_RES, "bd71815-dcin-ovp-res"),
  51        DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_OVP_DET, "bd71815-dcin-ovp-det"),
  52        DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_MON_RES, "bd71815-dcin-mon-res"),
  53        DEFINE_RES_IRQ_NAMED(BD71815_INT_DCIN_MON_DET, "bd71815-dcin-mon-det"),
  54        DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_UV_RES, "bd71815-vsys-uv-res"),
  55        DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_UV_DET, "bd71815-vsys-uv-det"),
  56        DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_LOW_RES, "bd71815-vsys-low-res"),
  57        DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_LOW_DET, "bd71815-vsys-low-det"),
  58        DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_MON_RES, "bd71815-vsys-mon-res"),
  59        DEFINE_RES_IRQ_NAMED(BD71815_INT_VSYS_MON_RES, "bd71815-vsys-mon-det"),
  60        DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_WDG_TEMP, "bd71815-chg-wdg-temp"),
  61        DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_WDG_TIME, "bd71815-chg-wdg"),
  62        DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_RECHARGE_RES, "bd71815-rechg-res"),
  63        DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_RECHARGE_DET, "bd71815-rechg-det"),
  64        DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_RANGED_TEMP_TRANSITION, "bd71815-ranged-temp-transit"),
  65        DEFINE_RES_IRQ_NAMED(BD71815_INT_CHG_STATE_TRANSITION, "bd71815-chg-state-change"),
  66        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_TEMP_NORMAL, "bd71815-bat-temp-normal"),
  67        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_TEMP_ERANGE, "bd71815-bat-temp-erange"),
  68        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_REMOVED, "bd71815-bat-rmv"),
  69        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_DETECTED, "bd71815-bat-det"),
  70        DEFINE_RES_IRQ_NAMED(BD71815_INT_THERM_REMOVED, "bd71815-therm-rmv"),
  71        DEFINE_RES_IRQ_NAMED(BD71815_INT_THERM_DETECTED, "bd71815-therm-det"),
  72        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_DEAD, "bd71815-bat-dead"),
  73        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_SHORTC_RES, "bd71815-bat-short-res"),
  74        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_SHORTC_DET, "bd71815-bat-short-det"),
  75        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_LOW_VOLT_RES, "bd71815-bat-low-res"),
  76        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_LOW_VOLT_DET, "bd71815-bat-low-det"),
  77        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_VOLT_RES, "bd71815-bat-over-res"),
  78        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_VOLT_DET, "bd71815-bat-over-det"),
  79        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_MON_RES, "bd71815-bat-mon-res"),
  80        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_MON_DET, "bd71815-bat-mon-det"),
  81        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_CC_MON1, "bd71815-bat-cc-mon1"),
  82        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_CC_MON2, "bd71815-bat-cc-mon2"),
  83        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_CC_MON3, "bd71815-bat-cc-mon3"),
  84        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_1_RES, "bd71815-bat-oc1-res"),
  85        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_1_DET, "bd71815-bat-oc1-det"),
  86        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_2_RES, "bd71815-bat-oc2-res"),
  87        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_2_DET, "bd71815-bat-oc2-det"),
  88        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_3_RES, "bd71815-bat-oc3-res"),
  89        DEFINE_RES_IRQ_NAMED(BD71815_INT_BAT_OVER_CURR_3_DET, "bd71815-bat-oc3-det"),
  90        DEFINE_RES_IRQ_NAMED(BD71815_INT_TEMP_BAT_LOW_RES, "bd71815-bat-low-res"),
  91        DEFINE_RES_IRQ_NAMED(BD71815_INT_TEMP_BAT_LOW_DET, "bd71815-bat-low-det"),
  92        DEFINE_RES_IRQ_NAMED(BD71815_INT_TEMP_BAT_HI_RES, "bd71815-bat-hi-res"),
  93        DEFINE_RES_IRQ_NAMED(BD71815_INT_TEMP_BAT_HI_DET, "bd71815-bat-hi-det"),
  94};
  95
  96static struct mfd_cell bd71815_mfd_cells[] = {
  97        { .name = "bd71815-pmic", },
  98        { .name = "bd71815-clk", },
  99        { .name = "bd71815-gpo", },
 100        {
 101                .name = "bd71815-power",
 102                .num_resources = ARRAY_SIZE(bd71815_power_irqs),
 103                .resources = &bd71815_power_irqs[0],
 104        },
 105        {
 106                .name = "bd71815-rtc",
 107                .num_resources = ARRAY_SIZE(bd71815_rtc_irqs),
 108                .resources = &bd71815_rtc_irqs[0],
 109        },
 110};
 111
 112static struct mfd_cell bd71828_mfd_cells[] = {
 113        { .name = "bd71828-pmic", },
 114        { .name = "bd71828-gpio", },
 115        { .name = "bd71828-led", .of_compatible = "rohm,bd71828-leds" },
 116        /*
 117         * We use BD71837 driver to drive the clock block. Only differences to
 118         * BD70528 clock gate are the register address and mask.
 119         */
 120        { .name = "bd71828-clk", },
 121        { .name = "bd71827-power", },
 122        {
 123                .name = "bd71828-rtc",
 124                .resources = bd71828_rtc_irqs,
 125                .num_resources = ARRAY_SIZE(bd71828_rtc_irqs),
 126        }, {
 127                .name = "gpio-keys",
 128                .platform_data = &bd71828_powerkey_data,
 129                .pdata_size = sizeof(bd71828_powerkey_data),
 130        },
 131};
 132
 133static const struct regmap_range bd71815_volatile_ranges[] = {
 134        {
 135                .range_min = BD71815_REG_SEC,
 136                .range_max = BD71815_REG_YEAR,
 137        }, {
 138                .range_min = BD71815_REG_CONF,
 139                .range_max = BD71815_REG_BAT_TEMP,
 140        }, {
 141                .range_min = BD71815_REG_VM_IBAT_U,
 142                .range_max = BD71815_REG_CC_CTRL,
 143        }, {
 144                .range_min = BD71815_REG_CC_STAT,
 145                .range_max = BD71815_REG_CC_CURCD_L,
 146        }, {
 147                .range_min = BD71815_REG_VM_BTMP_MON,
 148                .range_max = BD71815_REG_VM_BTMP_MON,
 149        }, {
 150                .range_min = BD71815_REG_INT_STAT,
 151                .range_max = BD71815_REG_INT_UPDATE,
 152        }, {
 153                .range_min = BD71815_REG_VM_VSYS_U,
 154                .range_max = BD71815_REG_REX_CTRL_1,
 155        }, {
 156                .range_min = BD71815_REG_FULL_CCNTD_3,
 157                .range_max = BD71815_REG_CCNTD_CHG_2,
 158        },
 159};
 160
 161static const struct regmap_range bd71828_volatile_ranges[] = {
 162        {
 163                .range_min = BD71828_REG_PS_CTRL_1,
 164                .range_max = BD71828_REG_PS_CTRL_1,
 165        }, {
 166                .range_min = BD71828_REG_PS_CTRL_3,
 167                .range_max = BD71828_REG_PS_CTRL_3,
 168        }, {
 169                .range_min = BD71828_REG_RTC_SEC,
 170                .range_max = BD71828_REG_RTC_YEAR,
 171        }, {
 172                /*
 173                 * For now make all charger registers volatile because many
 174                 * needs to be and because the charger block is not that
 175                 * performance critical.
 176                 */
 177                .range_min = BD71828_REG_CHG_STATE,
 178                .range_max = BD71828_REG_CHG_FULL,
 179        }, {
 180                .range_min = BD71828_REG_INT_MAIN,
 181                .range_max = BD71828_REG_IO_STAT,
 182        },
 183};
 184
 185static const struct regmap_access_table bd71815_volatile_regs = {
 186        .yes_ranges = &bd71815_volatile_ranges[0],
 187        .n_yes_ranges = ARRAY_SIZE(bd71815_volatile_ranges),
 188};
 189
 190static const struct regmap_access_table bd71828_volatile_regs = {
 191        .yes_ranges = &bd71828_volatile_ranges[0],
 192        .n_yes_ranges = ARRAY_SIZE(bd71828_volatile_ranges),
 193};
 194
 195static const struct regmap_config bd71815_regmap = {
 196        .reg_bits = 8,
 197        .val_bits = 8,
 198        .volatile_table = &bd71815_volatile_regs,
 199        .max_register = BD71815_MAX_REGISTER - 1,
 200        .cache_type = REGCACHE_RBTREE,
 201};
 202
 203static const struct regmap_config bd71828_regmap = {
 204        .reg_bits = 8,
 205        .val_bits = 8,
 206        .volatile_table = &bd71828_volatile_regs,
 207        .max_register = BD71828_MAX_REGISTER,
 208        .cache_type = REGCACHE_RBTREE,
 209};
 210
 211/*
 212 * Mapping of main IRQ register bits to sub-IRQ register offsets so that we can
 213 * access corect sub-IRQ registers based on bits that are set in main IRQ
 214 * register. BD71815 and BD71828 have same sub-register-block offests.
 215 */
 216
 217static unsigned int bit0_offsets[] = {11};              /* RTC IRQ */
 218static unsigned int bit1_offsets[] = {10};              /* TEMP IRQ */
 219static unsigned int bit2_offsets[] = {6, 7, 8, 9};      /* BAT MON IRQ */
 220static unsigned int bit3_offsets[] = {5};               /* BAT IRQ */
 221static unsigned int bit4_offsets[] = {4};               /* CHG IRQ */
 222static unsigned int bit5_offsets[] = {3};               /* VSYS IRQ */
 223static unsigned int bit6_offsets[] = {1, 2};            /* DCIN IRQ */
 224static unsigned int bit7_offsets[] = {0};               /* BUCK IRQ */
 225
 226static struct regmap_irq_sub_irq_map bd718xx_sub_irq_offsets[] = {
 227        REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),
 228        REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),
 229        REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),
 230        REGMAP_IRQ_MAIN_REG_OFFSET(bit3_offsets),
 231        REGMAP_IRQ_MAIN_REG_OFFSET(bit4_offsets),
 232        REGMAP_IRQ_MAIN_REG_OFFSET(bit5_offsets),
 233        REGMAP_IRQ_MAIN_REG_OFFSET(bit6_offsets),
 234        REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),
 235};
 236
 237static const struct regmap_irq bd71815_irqs[] = {
 238        REGMAP_IRQ_REG(BD71815_INT_BUCK1_OCP, 0, BD71815_INT_BUCK1_OCP_MASK),
 239        REGMAP_IRQ_REG(BD71815_INT_BUCK2_OCP, 0, BD71815_INT_BUCK2_OCP_MASK),
 240        REGMAP_IRQ_REG(BD71815_INT_BUCK3_OCP, 0, BD71815_INT_BUCK3_OCP_MASK),
 241        REGMAP_IRQ_REG(BD71815_INT_BUCK4_OCP, 0, BD71815_INT_BUCK4_OCP_MASK),
 242        REGMAP_IRQ_REG(BD71815_INT_BUCK5_OCP, 0, BD71815_INT_BUCK5_OCP_MASK),
 243        REGMAP_IRQ_REG(BD71815_INT_LED_OVP, 0, BD71815_INT_LED_OVP_MASK),
 244        REGMAP_IRQ_REG(BD71815_INT_LED_OCP, 0, BD71815_INT_LED_OCP_MASK),
 245        REGMAP_IRQ_REG(BD71815_INT_LED_SCP, 0, BD71815_INT_LED_SCP_MASK),
 246        /* DCIN1 interrupts */
 247        REGMAP_IRQ_REG(BD71815_INT_DCIN_RMV, 1, BD71815_INT_DCIN_RMV_MASK),
 248        REGMAP_IRQ_REG(BD71815_INT_CLPS_OUT, 1, BD71815_INT_CLPS_OUT_MASK),
 249        REGMAP_IRQ_REG(BD71815_INT_CLPS_IN, 1, BD71815_INT_CLPS_IN_MASK),
 250        REGMAP_IRQ_REG(BD71815_INT_DCIN_OVP_RES, 1, BD71815_INT_DCIN_OVP_RES_MASK),
 251        REGMAP_IRQ_REG(BD71815_INT_DCIN_OVP_DET, 1, BD71815_INT_DCIN_OVP_DET_MASK),
 252        /* DCIN2 interrupts */
 253        REGMAP_IRQ_REG(BD71815_INT_DCIN_MON_RES, 2, BD71815_INT_DCIN_MON_RES_MASK),
 254        REGMAP_IRQ_REG(BD71815_INT_DCIN_MON_DET, 2, BD71815_INT_DCIN_MON_DET_MASK),
 255        REGMAP_IRQ_REG(BD71815_INT_WDOG, 2, BD71815_INT_WDOG_MASK),
 256        /* Vsys */
 257        REGMAP_IRQ_REG(BD71815_INT_VSYS_UV_RES, 3, BD71815_INT_VSYS_UV_RES_MASK),
 258        REGMAP_IRQ_REG(BD71815_INT_VSYS_UV_DET, 3, BD71815_INT_VSYS_UV_DET_MASK),
 259        REGMAP_IRQ_REG(BD71815_INT_VSYS_LOW_RES, 3, BD71815_INT_VSYS_LOW_RES_MASK),
 260        REGMAP_IRQ_REG(BD71815_INT_VSYS_LOW_DET, 3, BD71815_INT_VSYS_LOW_DET_MASK),
 261        REGMAP_IRQ_REG(BD71815_INT_VSYS_MON_RES, 3, BD71815_INT_VSYS_MON_RES_MASK),
 262        REGMAP_IRQ_REG(BD71815_INT_VSYS_MON_DET, 3, BD71815_INT_VSYS_MON_DET_MASK),
 263        /* Charger */
 264        REGMAP_IRQ_REG(BD71815_INT_CHG_WDG_TEMP, 4, BD71815_INT_CHG_WDG_TEMP_MASK),
 265        REGMAP_IRQ_REG(BD71815_INT_CHG_WDG_TIME, 4, BD71815_INT_CHG_WDG_TIME_MASK),
 266        REGMAP_IRQ_REG(BD71815_INT_CHG_RECHARGE_RES, 4, BD71815_INT_CHG_RECHARGE_RES_MASK),
 267        REGMAP_IRQ_REG(BD71815_INT_CHG_RECHARGE_DET, 4, BD71815_INT_CHG_RECHARGE_DET_MASK),
 268        REGMAP_IRQ_REG(BD71815_INT_CHG_RANGED_TEMP_TRANSITION, 4,
 269                       BD71815_INT_CHG_RANGED_TEMP_TRANSITION_MASK),
 270        REGMAP_IRQ_REG(BD71815_INT_CHG_STATE_TRANSITION, 4, BD71815_INT_CHG_STATE_TRANSITION_MASK),
 271        /* Battery */
 272        REGMAP_IRQ_REG(BD71815_INT_BAT_TEMP_NORMAL, 5, BD71815_INT_BAT_TEMP_NORMAL_MASK),
 273        REGMAP_IRQ_REG(BD71815_INT_BAT_TEMP_ERANGE, 5, BD71815_INT_BAT_TEMP_ERANGE_MASK),
 274        REGMAP_IRQ_REG(BD71815_INT_BAT_REMOVED, 5, BD71815_INT_BAT_REMOVED_MASK),
 275        REGMAP_IRQ_REG(BD71815_INT_BAT_DETECTED, 5, BD71815_INT_BAT_DETECTED_MASK),
 276        REGMAP_IRQ_REG(BD71815_INT_THERM_REMOVED, 5, BD71815_INT_THERM_REMOVED_MASK),
 277        REGMAP_IRQ_REG(BD71815_INT_THERM_DETECTED, 5, BD71815_INT_THERM_DETECTED_MASK),
 278        /* Battery Mon 1 */
 279        REGMAP_IRQ_REG(BD71815_INT_BAT_DEAD, 6, BD71815_INT_BAT_DEAD_MASK),
 280        REGMAP_IRQ_REG(BD71815_INT_BAT_SHORTC_RES, 6, BD71815_INT_BAT_SHORTC_RES_MASK),
 281        REGMAP_IRQ_REG(BD71815_INT_BAT_SHORTC_DET, 6, BD71815_INT_BAT_SHORTC_DET_MASK),
 282        REGMAP_IRQ_REG(BD71815_INT_BAT_LOW_VOLT_RES, 6, BD71815_INT_BAT_LOW_VOLT_RES_MASK),
 283        REGMAP_IRQ_REG(BD71815_INT_BAT_LOW_VOLT_DET, 6, BD71815_INT_BAT_LOW_VOLT_DET_MASK),
 284        REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_VOLT_RES, 6, BD71815_INT_BAT_OVER_VOLT_RES_MASK),
 285        REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_VOLT_DET, 6, BD71815_INT_BAT_OVER_VOLT_DET_MASK),
 286        /* Battery Mon 2 */
 287        REGMAP_IRQ_REG(BD71815_INT_BAT_MON_RES, 7, BD71815_INT_BAT_MON_RES_MASK),
 288        REGMAP_IRQ_REG(BD71815_INT_BAT_MON_DET, 7, BD71815_INT_BAT_MON_DET_MASK),
 289        /* Battery Mon 3 (Coulomb counter) */
 290        REGMAP_IRQ_REG(BD71815_INT_BAT_CC_MON1, 8, BD71815_INT_BAT_CC_MON1_MASK),
 291        REGMAP_IRQ_REG(BD71815_INT_BAT_CC_MON2, 8, BD71815_INT_BAT_CC_MON2_MASK),
 292        REGMAP_IRQ_REG(BD71815_INT_BAT_CC_MON3, 8, BD71815_INT_BAT_CC_MON3_MASK),
 293        /* Battery Mon 4 */
 294        REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_1_RES, 9, BD71815_INT_BAT_OVER_CURR_1_RES_MASK),
 295        REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_1_DET, 9, BD71815_INT_BAT_OVER_CURR_1_DET_MASK),
 296        REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_2_RES, 9, BD71815_INT_BAT_OVER_CURR_2_RES_MASK),
 297        REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_2_DET, 9, BD71815_INT_BAT_OVER_CURR_2_DET_MASK),
 298        REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_3_RES, 9, BD71815_INT_BAT_OVER_CURR_3_RES_MASK),
 299        REGMAP_IRQ_REG(BD71815_INT_BAT_OVER_CURR_3_DET, 9, BD71815_INT_BAT_OVER_CURR_3_DET_MASK),
 300        /* Temperature */
 301        REGMAP_IRQ_REG(BD71815_INT_TEMP_BAT_LOW_RES, 10, BD71815_INT_TEMP_BAT_LOW_RES_MASK),
 302        REGMAP_IRQ_REG(BD71815_INT_TEMP_BAT_LOW_DET, 10, BD71815_INT_TEMP_BAT_LOW_DET_MASK),
 303        REGMAP_IRQ_REG(BD71815_INT_TEMP_BAT_HI_RES, 10, BD71815_INT_TEMP_BAT_HI_RES_MASK),
 304        REGMAP_IRQ_REG(BD71815_INT_TEMP_BAT_HI_DET, 10, BD71815_INT_TEMP_BAT_HI_DET_MASK),
 305        REGMAP_IRQ_REG(BD71815_INT_TEMP_CHIP_OVER_125_RES, 10,
 306                       BD71815_INT_TEMP_CHIP_OVER_125_RES_MASK),
 307        REGMAP_IRQ_REG(BD71815_INT_TEMP_CHIP_OVER_125_DET, 10,
 308                       BD71815_INT_TEMP_CHIP_OVER_125_DET_MASK),
 309        REGMAP_IRQ_REG(BD71815_INT_TEMP_CHIP_OVER_VF_RES, 10,
 310                       BD71815_INT_TEMP_CHIP_OVER_VF_RES_MASK),
 311        REGMAP_IRQ_REG(BD71815_INT_TEMP_CHIP_OVER_VF_DET, 10,
 312                       BD71815_INT_TEMP_CHIP_OVER_VF_DET_MASK),
 313        /* RTC Alarm */
 314        REGMAP_IRQ_REG(BD71815_INT_RTC0, 11, BD71815_INT_RTC0_MASK),
 315        REGMAP_IRQ_REG(BD71815_INT_RTC1, 11, BD71815_INT_RTC1_MASK),
 316        REGMAP_IRQ_REG(BD71815_INT_RTC2, 11, BD71815_INT_RTC2_MASK),
 317};
 318
 319static struct regmap_irq bd71828_irqs[] = {
 320        REGMAP_IRQ_REG(BD71828_INT_BUCK1_OCP, 0, BD71828_INT_BUCK1_OCP_MASK),
 321        REGMAP_IRQ_REG(BD71828_INT_BUCK2_OCP, 0, BD71828_INT_BUCK2_OCP_MASK),
 322        REGMAP_IRQ_REG(BD71828_INT_BUCK3_OCP, 0, BD71828_INT_BUCK3_OCP_MASK),
 323        REGMAP_IRQ_REG(BD71828_INT_BUCK4_OCP, 0, BD71828_INT_BUCK4_OCP_MASK),
 324        REGMAP_IRQ_REG(BD71828_INT_BUCK5_OCP, 0, BD71828_INT_BUCK5_OCP_MASK),
 325        REGMAP_IRQ_REG(BD71828_INT_BUCK6_OCP, 0, BD71828_INT_BUCK6_OCP_MASK),
 326        REGMAP_IRQ_REG(BD71828_INT_BUCK7_OCP, 0, BD71828_INT_BUCK7_OCP_MASK),
 327        REGMAP_IRQ_REG(BD71828_INT_PGFAULT, 0, BD71828_INT_PGFAULT_MASK),
 328        /* DCIN1 interrupts */
 329        REGMAP_IRQ_REG(BD71828_INT_DCIN_DET, 1, BD71828_INT_DCIN_DET_MASK),
 330        REGMAP_IRQ_REG(BD71828_INT_DCIN_RMV, 1, BD71828_INT_DCIN_RMV_MASK),
 331        REGMAP_IRQ_REG(BD71828_INT_CLPS_OUT, 1, BD71828_INT_CLPS_OUT_MASK),
 332        REGMAP_IRQ_REG(BD71828_INT_CLPS_IN, 1, BD71828_INT_CLPS_IN_MASK),
 333        /* DCIN2 interrupts */
 334        REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_RES, 2, BD71828_INT_DCIN_MON_RES_MASK),
 335        REGMAP_IRQ_REG(BD71828_INT_DCIN_MON_DET, 2, BD71828_INT_DCIN_MON_DET_MASK),
 336        REGMAP_IRQ_REG(BD71828_INT_LONGPUSH, 2, BD71828_INT_LONGPUSH_MASK),
 337        REGMAP_IRQ_REG(BD71828_INT_MIDPUSH, 2, BD71828_INT_MIDPUSH_MASK),
 338        REGMAP_IRQ_REG(BD71828_INT_SHORTPUSH, 2, BD71828_INT_SHORTPUSH_MASK),
 339        REGMAP_IRQ_REG(BD71828_INT_PUSH, 2, BD71828_INT_PUSH_MASK),
 340        REGMAP_IRQ_REG(BD71828_INT_WDOG, 2, BD71828_INT_WDOG_MASK),
 341        REGMAP_IRQ_REG(BD71828_INT_SWRESET, 2, BD71828_INT_SWRESET_MASK),
 342        /* Vsys */
 343        REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_RES, 3, BD71828_INT_VSYS_UV_RES_MASK),
 344        REGMAP_IRQ_REG(BD71828_INT_VSYS_UV_DET, 3, BD71828_INT_VSYS_UV_DET_MASK),
 345        REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_RES, 3, BD71828_INT_VSYS_LOW_RES_MASK),
 346        REGMAP_IRQ_REG(BD71828_INT_VSYS_LOW_DET, 3, BD71828_INT_VSYS_LOW_DET_MASK),
 347        REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_IN, 3, BD71828_INT_VSYS_HALL_IN_MASK),
 348        REGMAP_IRQ_REG(BD71828_INT_VSYS_HALL_TOGGLE, 3, BD71828_INT_VSYS_HALL_TOGGLE_MASK),
 349        REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_RES, 3, BD71828_INT_VSYS_MON_RES_MASK),
 350        REGMAP_IRQ_REG(BD71828_INT_VSYS_MON_DET, 3, BD71828_INT_VSYS_MON_DET_MASK),
 351        /* Charger */
 352        REGMAP_IRQ_REG(BD71828_INT_CHG_DCIN_ILIM, 4, BD71828_INT_CHG_DCIN_ILIM_MASK),
 353        REGMAP_IRQ_REG(BD71828_INT_CHG_TOPOFF_TO_DONE, 4, BD71828_INT_CHG_TOPOFF_TO_DONE_MASK),
 354        REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TEMP, 4, BD71828_INT_CHG_WDG_TEMP_MASK),
 355        REGMAP_IRQ_REG(BD71828_INT_CHG_WDG_TIME, 4, BD71828_INT_CHG_WDG_TIME_MASK),
 356        REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_RES, 4, BD71828_INT_CHG_RECHARGE_RES_MASK),
 357        REGMAP_IRQ_REG(BD71828_INT_CHG_RECHARGE_DET, 4, BD71828_INT_CHG_RECHARGE_DET_MASK),
 358        REGMAP_IRQ_REG(BD71828_INT_CHG_RANGED_TEMP_TRANSITION, 4,
 359                       BD71828_INT_CHG_RANGED_TEMP_TRANSITION_MASK),
 360        REGMAP_IRQ_REG(BD71828_INT_CHG_STATE_TRANSITION, 4, BD71828_INT_CHG_STATE_TRANSITION_MASK),
 361        /* Battery */
 362        REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_NORMAL, 5, BD71828_INT_BAT_TEMP_NORMAL_MASK),
 363        REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_ERANGE, 5, BD71828_INT_BAT_TEMP_ERANGE_MASK),
 364        REGMAP_IRQ_REG(BD71828_INT_BAT_TEMP_WARN, 5, BD71828_INT_BAT_TEMP_WARN_MASK),
 365        REGMAP_IRQ_REG(BD71828_INT_BAT_REMOVED, 5, BD71828_INT_BAT_REMOVED_MASK),
 366        REGMAP_IRQ_REG(BD71828_INT_BAT_DETECTED, 5, BD71828_INT_BAT_DETECTED_MASK),
 367        REGMAP_IRQ_REG(BD71828_INT_THERM_REMOVED, 5, BD71828_INT_THERM_REMOVED_MASK),
 368        REGMAP_IRQ_REG(BD71828_INT_THERM_DETECTED, 5, BD71828_INT_THERM_DETECTED_MASK),
 369        /* Battery Mon 1 */
 370        REGMAP_IRQ_REG(BD71828_INT_BAT_DEAD, 6, BD71828_INT_BAT_DEAD_MASK),
 371        REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_RES, 6, BD71828_INT_BAT_SHORTC_RES_MASK),
 372        REGMAP_IRQ_REG(BD71828_INT_BAT_SHORTC_DET, 6, BD71828_INT_BAT_SHORTC_DET_MASK),
 373        REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_RES, 6, BD71828_INT_BAT_LOW_VOLT_RES_MASK),
 374        REGMAP_IRQ_REG(BD71828_INT_BAT_LOW_VOLT_DET, 6, BD71828_INT_BAT_LOW_VOLT_DET_MASK),
 375        REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_RES, 6, BD71828_INT_BAT_OVER_VOLT_RES_MASK),
 376        REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_VOLT_DET, 6, BD71828_INT_BAT_OVER_VOLT_DET_MASK),
 377        /* Battery Mon 2 */
 378        REGMAP_IRQ_REG(BD71828_INT_BAT_MON_RES, 7, BD71828_INT_BAT_MON_RES_MASK),
 379        REGMAP_IRQ_REG(BD71828_INT_BAT_MON_DET, 7, BD71828_INT_BAT_MON_DET_MASK),
 380        /* Battery Mon 3 (Coulomb counter) */
 381        REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON1, 8, BD71828_INT_BAT_CC_MON1_MASK),
 382        REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON2, 8, BD71828_INT_BAT_CC_MON2_MASK),
 383        REGMAP_IRQ_REG(BD71828_INT_BAT_CC_MON3, 8, BD71828_INT_BAT_CC_MON3_MASK),
 384        /* Battery Mon 4 */
 385        REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_RES, 9, BD71828_INT_BAT_OVER_CURR_1_RES_MASK),
 386        REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_1_DET, 9, BD71828_INT_BAT_OVER_CURR_1_DET_MASK),
 387        REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_RES, 9, BD71828_INT_BAT_OVER_CURR_2_RES_MASK),
 388        REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_2_DET, 9, BD71828_INT_BAT_OVER_CURR_2_DET_MASK),
 389        REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_RES, 9, BD71828_INT_BAT_OVER_CURR_3_RES_MASK),
 390        REGMAP_IRQ_REG(BD71828_INT_BAT_OVER_CURR_3_DET, 9, BD71828_INT_BAT_OVER_CURR_3_DET_MASK),
 391        /* Temperature */
 392        REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_RES, 10, BD71828_INT_TEMP_BAT_LOW_RES_MASK),
 393        REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_LOW_DET, 10, BD71828_INT_TEMP_BAT_LOW_DET_MASK),
 394        REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_RES, 10, BD71828_INT_TEMP_BAT_HI_RES_MASK),
 395        REGMAP_IRQ_REG(BD71828_INT_TEMP_BAT_HI_DET, 10, BD71828_INT_TEMP_BAT_HI_DET_MASK),
 396        REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_125_RES, 10,
 397                       BD71828_INT_TEMP_CHIP_OVER_125_RES_MASK),
 398        REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_125_DET, 10,
 399                       BD71828_INT_TEMP_CHIP_OVER_125_DET_MASK),
 400        REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_VF_DET, 10,
 401                       BD71828_INT_TEMP_CHIP_OVER_VF_DET_MASK),
 402        REGMAP_IRQ_REG(BD71828_INT_TEMP_CHIP_OVER_VF_RES, 10,
 403                       BD71828_INT_TEMP_CHIP_OVER_VF_RES_MASK),
 404        /* RTC Alarm */
 405        REGMAP_IRQ_REG(BD71828_INT_RTC0, 11, BD71828_INT_RTC0_MASK),
 406        REGMAP_IRQ_REG(BD71828_INT_RTC1, 11, BD71828_INT_RTC1_MASK),
 407        REGMAP_IRQ_REG(BD71828_INT_RTC2, 11, BD71828_INT_RTC2_MASK),
 408};
 409
 410static struct regmap_irq_chip bd71828_irq_chip = {
 411        .name = "bd71828_irq",
 412        .main_status = BD71828_REG_INT_MAIN,
 413        .irqs = &bd71828_irqs[0],
 414        .num_irqs = ARRAY_SIZE(bd71828_irqs),
 415        .status_base = BD71828_REG_INT_BUCK,
 416        .mask_base = BD71828_REG_INT_MASK_BUCK,
 417        .ack_base = BD71828_REG_INT_BUCK,
 418        .mask_invert = true,
 419        .init_ack_masked = true,
 420        .num_regs = 12,
 421        .num_main_regs = 1,
 422        .sub_reg_offsets = &bd718xx_sub_irq_offsets[0],
 423        .num_main_status_bits = 8,
 424        .irq_reg_stride = 1,
 425};
 426
 427static struct regmap_irq_chip bd71815_irq_chip = {
 428        .name = "bd71815_irq",
 429        .main_status = BD71815_REG_INT_STAT,
 430        .irqs = &bd71815_irqs[0],
 431        .num_irqs = ARRAY_SIZE(bd71815_irqs),
 432        .status_base = BD71815_REG_INT_STAT_01,
 433        .mask_base = BD71815_REG_INT_EN_01,
 434        .ack_base = BD71815_REG_INT_STAT_01,
 435        .mask_invert = true,
 436        .init_ack_masked = true,
 437        .num_regs = 12,
 438        .num_main_regs = 1,
 439        .sub_reg_offsets = &bd718xx_sub_irq_offsets[0],
 440        .num_main_status_bits = 8,
 441        .irq_reg_stride = 1,
 442};
 443
 444static int set_clk_mode(struct device *dev, struct regmap *regmap,
 445                        int clkmode_reg)
 446{
 447        int ret;
 448        unsigned int open_drain;
 449
 450        ret = of_property_read_u32(dev->of_node, "rohm,clkout-open-drain", &open_drain);
 451        if (ret) {
 452                if (ret == -EINVAL)
 453                        return 0;
 454                return ret;
 455        }
 456        if (open_drain > 1) {
 457                dev_err(dev, "bad clk32kout mode configuration");
 458                return -EINVAL;
 459        }
 460
 461        if (open_drain)
 462                return regmap_update_bits(regmap, clkmode_reg, OUT32K_MODE,
 463                                          OUT32K_MODE_OPEN_DRAIN);
 464
 465        return regmap_update_bits(regmap, clkmode_reg, OUT32K_MODE,
 466                                  OUT32K_MODE_CMOS);
 467}
 468
 469static int bd71828_i2c_probe(struct i2c_client *i2c)
 470{
 471        struct regmap_irq_chip_data *irq_data;
 472        int ret;
 473        struct regmap *regmap;
 474        const struct regmap_config *regmap_config;
 475        struct regmap_irq_chip *irqchip;
 476        unsigned int chip_type;
 477        struct mfd_cell *mfd;
 478        int cells;
 479        int button_irq;
 480        int clkmode_reg;
 481
 482        if (!i2c->irq) {
 483                dev_err(&i2c->dev, "No IRQ configured\n");
 484                return -EINVAL;
 485        }
 486
 487        chip_type = (unsigned int)(uintptr_t)
 488                    of_device_get_match_data(&i2c->dev);
 489        switch (chip_type) {
 490        case ROHM_CHIP_TYPE_BD71828:
 491                mfd = bd71828_mfd_cells;
 492                cells = ARRAY_SIZE(bd71828_mfd_cells);
 493                regmap_config = &bd71828_regmap;
 494                irqchip = &bd71828_irq_chip;
 495                clkmode_reg = BD71828_REG_OUT32K;
 496                button_irq = BD71828_INT_SHORTPUSH;
 497                break;
 498        case ROHM_CHIP_TYPE_BD71815:
 499                mfd = bd71815_mfd_cells;
 500                cells = ARRAY_SIZE(bd71815_mfd_cells);
 501                regmap_config = &bd71815_regmap;
 502                irqchip = &bd71815_irq_chip;
 503                clkmode_reg = BD71815_REG_OUT32K;
 504                /*
 505                 * If BD71817 support is needed we should be able to handle it
 506                 * with proper DT configs + BD71815 drivers + power-button.
 507                 * BD71815 data-sheet does not list the power-button IRQ so we
 508                 * don't use it.
 509                 */
 510                button_irq = 0;
 511                break;
 512        default:
 513                dev_err(&i2c->dev, "Unknown device type");
 514                return -EINVAL;
 515        }
 516
 517        regmap = devm_regmap_init_i2c(i2c, regmap_config);
 518        if (IS_ERR(regmap)) {
 519                dev_err(&i2c->dev, "Failed to initialize Regmap\n");
 520                return PTR_ERR(regmap);
 521        }
 522
 523        ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, i2c->irq,
 524                                       IRQF_ONESHOT, 0, irqchip, &irq_data);
 525        if (ret) {
 526                dev_err(&i2c->dev, "Failed to add IRQ chip\n");
 527                return ret;
 528        }
 529
 530        dev_dbg(&i2c->dev, "Registered %d IRQs for chip\n",
 531                irqchip->num_irqs);
 532
 533        if (button_irq) {
 534                ret = regmap_irq_get_virq(irq_data, button_irq);
 535                if (ret < 0) {
 536                        dev_err(&i2c->dev, "Failed to get the power-key IRQ\n");
 537                        return ret;
 538                }
 539
 540                button.irq = ret;
 541        }
 542
 543        ret = set_clk_mode(&i2c->dev, regmap, clkmode_reg);
 544        if (ret)
 545                return ret;
 546
 547        ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, mfd, cells,
 548                                   NULL, 0, regmap_irq_get_domain(irq_data));
 549        if (ret)
 550                dev_err(&i2c->dev, "Failed to create subdevices\n");
 551
 552        return ret;
 553}
 554
 555static const struct of_device_id bd71828_of_match[] = {
 556        {
 557                .compatible = "rohm,bd71828",
 558                .data = (void *)ROHM_CHIP_TYPE_BD71828,
 559        }, {
 560                .compatible = "rohm,bd71815",
 561                .data = (void *)ROHM_CHIP_TYPE_BD71815,
 562         },
 563        { },
 564};
 565MODULE_DEVICE_TABLE(of, bd71828_of_match);
 566
 567static struct i2c_driver bd71828_drv = {
 568        .driver = {
 569                .name = "rohm-bd71828",
 570                .of_match_table = bd71828_of_match,
 571        },
 572        .probe_new = &bd71828_i2c_probe,
 573};
 574module_i2c_driver(bd71828_drv);
 575
 576MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
 577MODULE_DESCRIPTION("ROHM BD71828 Power Management IC driver");
 578MODULE_LICENSE("GPL");
 579