drivers/mfd/rohm-bd71828.c

   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.h>
  19 #include <linux/regmap.h>
  20 #include <linux/types.h>
  21
  22 static struct gpio_keys_button button = {
  23         .code = KEY_POWER,
  24         .gpio = -1,
  25         .type = EV_KEY,
  26 };
  27
  28 static struct gpio_keys_platform_data bd71828_powerkey_data = {
  29         .buttons = &button,
  30         .nbuttons = 1,
  31         .name = "bd71828-pwrkey",
  32 };
  33
  34 static const struct resource bd71815_rtc_irqs[] = {
  35         DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC0, "bd70528-rtc-alm-0"),
  36         DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC1, "bd70528-rtc-alm-1"),
  37         DEFINE_RES_IRQ_NAMED(BD71815_INT_RTC2, "bd70528-rtc-alm-2"),
  38 };
  39
  40 static const struct resource bd71828_rtc_irqs[] = {
  41         DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC0, "bd70528-rtc-alm-0"),
  42         DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC1, "bd70528-rtc-alm-1"),
  43         DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC2, "bd70528-rtc-alm-2"),
  44 };
  45
  46 static 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
  96 static 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
 112 static 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
 133 static 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
 161 static 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
 185 static 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
 190 static 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
 195 static 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_MAPLE,
 201 };
 202
 203 static 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_MAPLE,
 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
 217 static unsigned int bit0_offsets[] = {11};              /* RTC IRQ */
 218 static unsigned int bit1_offsets[] = {10};              /* TEMP IRQ */
 219 static unsigned int bit2_offsets[] = {6, 7, 8, 9};      /* BAT MON IRQ */
 220 static unsigned int bit3_offsets[] = {5};               /* BAT IRQ */
 221 static unsigned int bit4_offsets[] = {4};               /* CHG IRQ */
 222 static unsigned int bit5_offsets[] = {3};               /* VSYS IRQ */
 223 static unsigned int bit6_offsets[] = {1, 2};            /* DCIN IRQ */
 224 static unsigned int bit7_offsets[] = {0};               /* BUCK IRQ */
 225
 226 static 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
 237 static 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
 319 static const 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
 410 static const 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         .unmask_base = BD71828_REG_INT_MASK_BUCK,
 417         .ack_base = BD71828_REG_INT_BUCK,
 418         .init_ack_masked = true,
 419         .num_regs = 12,
 420         .num_main_regs = 1,
 421         .sub_reg_offsets = &bd718xx_sub_irq_offsets[0],
 422         .num_main_status_bits = 8,
 423         .irq_reg_stride = 1,
 424 };
 425
 426 static const struct regmap_irq_chip bd71815_irq_chip = {
 427         .name = "bd71815_irq",
 428         .main_status = BD71815_REG_INT_STAT,
 429         .irqs = &bd71815_irqs[0],
 430         .num_irqs = ARRAY_SIZE(bd71815_irqs),
 431         .status_base = BD71815_REG_INT_STAT_01,
 432         .unmask_base = BD71815_REG_INT_EN_01,
 433         .ack_base = BD71815_REG_INT_STAT_01,
 434         .init_ack_masked = true,
 435         .num_regs = 12,
 436         .num_main_regs = 1,
 437         .sub_reg_offsets = &bd718xx_sub_irq_offsets[0],
 438         .num_main_status_bits = 8,
 439         .irq_reg_stride = 1,
 440 };
 441
 442 static int set_clk_mode(struct device *dev, struct regmap *regmap,
 443                         int clkmode_reg)
 444 {
 445         int ret;
 446         unsigned int open_drain;
 447
 448         ret = of_property_read_u32(dev->of_node, "rohm,clkout-open-drain", &open_drain);
 449         if (ret) {
 450                 if (ret == -EINVAL)
 451                         return 0;
 452                 return ret;
 453         }
 454         if (open_drain > 1) {
 455                 dev_err(dev, "bad clk32kout mode configuration");
 456                 return -EINVAL;
 457         }
 458
 459         if (open_drain)
 460                 return regmap_update_bits(regmap, clkmode_reg, OUT32K_MODE,
 461                                           OUT32K_MODE_OPEN_DRAIN);
 462
 463         return regmap_update_bits(regmap, clkmode_reg, OUT32K_MODE,
 464                                   OUT32K_MODE_CMOS);
 465 }
 466
 467 static struct i2c_client *bd71828_dev;
 468 static void bd71828_power_off(void)
 469 {
 470         while (true) {
 471                 s32 val;
 472
 473                 /* We are not allowed to sleep, so do not use regmap involving mutexes here. */
 474                 val = i2c_smbus_read_byte_data(bd71828_dev, BD71828_REG_PS_CTRL_1);
 475                 if (val >= 0)
 476                         i2c_smbus_write_byte_data(bd71828_dev,
 477                                                   BD71828_REG_PS_CTRL_1,
 478                                                   BD71828_MASK_STATE_HBNT | (u8)val);
 479                 mdelay(500);
 480         }
 481 }
 482
 483 static void bd71828_remove_poweroff(void *data)
 484 {
 485         pm_power_off = NULL;
 486 }
 487
 488 static int bd71828_i2c_probe(struct i2c_client *i2c)
 489 {
 490         struct regmap_irq_chip_data *irq_data;
 491         int ret;
 492         struct regmap *regmap;
 493         const struct regmap_config *regmap_config;
 494         const struct regmap_irq_chip *irqchip;
 495         unsigned int chip_type;
 496         struct mfd_cell *mfd;
 497         int cells;
 498         int button_irq;
 499         int clkmode_reg;
 500
 501         if (!i2c->irq) {
 502                 dev_err(&i2c->dev, "No IRQ configured\n");
 503                 return -EINVAL;
 504         }
 505
 506         chip_type = (unsigned int)(uintptr_t)
 507                     of_device_get_match_data(&i2c->dev);
 508         switch (chip_type) {
 509         case ROHM_CHIP_TYPE_BD71828:
 510                 mfd = bd71828_mfd_cells;
 511                 cells = ARRAY_SIZE(bd71828_mfd_cells);
 512                 regmap_config = &bd71828_regmap;
 513                 irqchip = &bd71828_irq_chip;
 514                 clkmode_reg = BD71828_REG_OUT32K;
 515                 button_irq = BD71828_INT_SHORTPUSH;
 516                 break;
 517         case ROHM_CHIP_TYPE_BD71815:
 518                 mfd = bd71815_mfd_cells;
 519                 cells = ARRAY_SIZE(bd71815_mfd_cells);
 520                 regmap_config = &bd71815_regmap;
 521                 irqchip = &bd71815_irq_chip;
 522                 clkmode_reg = BD71815_REG_OUT32K;
 523                 /*
 524                  * If BD71817 support is needed we should be able to handle it
 525                  * with proper DT configs + BD71815 drivers + power-button.
 526                  * BD71815 data-sheet does not list the power-button IRQ so we
 527                  * don't use it.
 528                  */
 529                 button_irq = 0;
 530                 break;
 531         default:
 532                 dev_err(&i2c->dev, "Unknown device type");
 533                 return -EINVAL;
 534         }
 535
 536         regmap = devm_regmap_init_i2c(i2c, regmap_config);
 537         if (IS_ERR(regmap))
 538                 return dev_err_probe(&i2c->dev, PTR_ERR(regmap),
 539                                      "Failed to initialize Regmap\n");
 540
 541         ret = devm_regmap_add_irq_chip(&i2c->dev, regmap, i2c->irq,
 542                                        IRQF_ONESHOT, 0, irqchip, &irq_data);
 543         if (ret)
 544                 return dev_err_probe(&i2c->dev, ret,
 545                                      "Failed to add IRQ chip\n");
 546
 547         dev_dbg(&i2c->dev, "Registered %d IRQs for chip\n",
 548                 irqchip->num_irqs);
 549
 550         if (button_irq) {
 551                 ret = regmap_irq_get_virq(irq_data, button_irq);
 552                 if (ret < 0)
 553                         return dev_err_probe(&i2c->dev, ret,
 554                                              "Failed to get the power-key IRQ\n");
 555
 556                 button.irq = ret;
 557         }
 558
 559         ret = set_clk_mode(&i2c->dev, regmap, clkmode_reg);
 560         if (ret)
 561                 return ret;
 562
 563         ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO, mfd, cells,
 564                                    NULL, 0, regmap_irq_get_domain(irq_data));
 565         if (ret)
 566                 return  dev_err_probe(&i2c->dev, ret, "Failed to create subdevices\n");
 567
 568         if (of_device_is_system_power_controller(i2c->dev.of_node) &&
 569             chip_type == ROHM_CHIP_TYPE_BD71828) {
 570                 if (!pm_power_off) {
 571                         bd71828_dev = i2c;
 572                         pm_power_off = bd71828_power_off;
 573                         ret = devm_add_action_or_reset(&i2c->dev,
 574                                                        bd71828_remove_poweroff,
 575                                                        NULL);
 576                 } else {
 577                         dev_warn(&i2c->dev, "Poweroff callback already assigned\n");
 578                 }
 579         }
 580
 581         return ret;
 582 }
 583
 584 static const struct of_device_id bd71828_of_match[] = {
 585         {
 586                 .compatible = "rohm,bd71828",
 587                 .data = (void *)ROHM_CHIP_TYPE_BD71828,
 588         }, {
 589                 .compatible = "rohm,bd71815",
 590                 .data = (void *)ROHM_CHIP_TYPE_BD71815,
 591          },
 592         { },
 593 };
 594 MODULE_DEVICE_TABLE(of, bd71828_of_match);
 595
 596 static struct i2c_driver bd71828_drv = {
 597         .driver = {
 598                 .name = "rohm-bd71828",
 599                 .of_match_table = bd71828_of_match,
 600         },
 601         .probe = bd71828_i2c_probe,
 602 };
 603 module_i2c_driver(bd71828_drv);
 604
 605 MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
 606 MODULE_DESCRIPTION("ROHM BD71828 Power Management IC driver");
 607 MODULE_LICENSE("GPL");