drivers/mfd/rk808.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * MFD core driver for Rockchip RK808/RK818
   4  *
   5  * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
   6  *
   7  * Author: Chris Zhong <zyw@rock-chips.com>
   8  * Author: Zhang Qing <zhangqing@rock-chips.com>
   9  *
  10  * Copyright (C) 2016 PHYTEC Messtechnik GmbH
  11  *
  12  * Author: Wadim Egorov <w.egorov@phytec.de>
  13  */
  14
  15 #include <linux/i2c.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/mfd/rk808.h>
  18 #include <linux/mfd/core.h>
  19 #include <linux/module.h>
  20 #include <linux/of_device.h>
  21 #include <linux/regmap.h>
  22 #include <linux/reboot.h>
  23
  24 struct rk808_reg_data {
  25         int addr;
  26         int mask;
  27         int value;
  28 };
  29
  30 static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
  31 {
  32         /*
  33          * Notes:
  34          * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
  35          *   we don't use that feature.  It's better to cache.
  36          * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
  37          *   bits are cleared in case when we shutoff anyway, but better safe.
  38          */
  39
  40         switch (reg) {
  41         case RK808_SECONDS_REG ... RK808_WEEKS_REG:
  42         case RK808_RTC_STATUS_REG:
  43         case RK808_VB_MON_REG:
  44         case RK808_THERMAL_REG:
  45         case RK808_DCDC_UV_STS_REG:
  46         case RK808_LDO_UV_STS_REG:
  47         case RK808_DCDC_PG_REG:
  48         case RK808_LDO_PG_REG:
  49         case RK808_DEVCTRL_REG:
  50         case RK808_INT_STS_REG1:
  51         case RK808_INT_STS_REG2:
  52                 return true;
  53         }
  54
  55         return false;
  56 }
  57
  58 static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
  59 {
  60         /*
  61          * Notes:
  62          * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
  63          *   we don't use that feature.  It's better to cache.
  64          */
  65
  66         switch (reg) {
  67         case RK817_SECONDS_REG ... RK817_WEEKS_REG:
  68         case RK817_RTC_STATUS_REG:
  69         case RK817_CODEC_DTOP_LPT_SRST:
  70         case RK817_GAS_GAUGE_ADC_CONFIG0 ... RK817_GAS_GAUGE_CUR_ADC_K0:
  71         case RK817_PMIC_CHRG_STS:
  72         case RK817_PMIC_CHRG_OUT:
  73         case RK817_PMIC_CHRG_IN:
  74         case RK817_INT_STS_REG0:
  75         case RK817_INT_STS_REG1:
  76         case RK817_INT_STS_REG2:
  77         case RK817_SYS_STS:
  78                 return true;
  79         }
  80
  81         return false;
  82 }
  83
  84 static const struct regmap_config rk818_regmap_config = {
  85         .reg_bits = 8,
  86         .val_bits = 8,
  87         .max_register = RK818_USB_CTRL_REG,
  88         .cache_type = REGCACHE_RBTREE,
  89         .volatile_reg = rk808_is_volatile_reg,
  90 };
  91
  92 static const struct regmap_config rk805_regmap_config = {
  93         .reg_bits = 8,
  94         .val_bits = 8,
  95         .max_register = RK805_OFF_SOURCE_REG,
  96         .cache_type = REGCACHE_RBTREE,
  97         .volatile_reg = rk808_is_volatile_reg,
  98 };
  99
 100 static const struct regmap_config rk808_regmap_config = {
 101         .reg_bits = 8,
 102         .val_bits = 8,
 103         .max_register = RK808_IO_POL_REG,
 104         .cache_type = REGCACHE_RBTREE,
 105         .volatile_reg = rk808_is_volatile_reg,
 106 };
 107
 108 static const struct regmap_config rk817_regmap_config = {
 109         .reg_bits = 8,
 110         .val_bits = 8,
 111         .max_register = RK817_GPIO_INT_CFG,
 112         .cache_type = REGCACHE_NONE,
 113         .volatile_reg = rk817_is_volatile_reg,
 114 };
 115
 116 static const struct resource rtc_resources[] = {
 117         DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
 118 };
 119
 120 static const struct resource rk817_rtc_resources[] = {
 121         DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
 122 };
 123
 124 static const struct resource rk805_key_resources[] = {
 125         DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE),
 126         DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL),
 127 };
 128
 129 static const struct resource rk817_pwrkey_resources[] = {
 130         DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE),
 131         DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL),
 132 };
 133
 134 static const struct resource rk817_charger_resources[] = {
 135         DEFINE_RES_IRQ(RK817_IRQ_PLUG_IN),
 136         DEFINE_RES_IRQ(RK817_IRQ_PLUG_OUT),
 137 };
 138
 139 static const struct mfd_cell rk805s[] = {
 140         { .name = "rk808-clkout", },
 141         { .name = "rk808-regulator", },
 142         { .name = "rk805-pinctrl", },
 143         {
 144                 .name = "rk808-rtc",
 145                 .num_resources = ARRAY_SIZE(rtc_resources),
 146                 .resources = &rtc_resources[0],
 147         },
 148         {       .name = "rk805-pwrkey",
 149                 .num_resources = ARRAY_SIZE(rk805_key_resources),
 150                 .resources = &rk805_key_resources[0],
 151         },
 152 };
 153
 154 static const struct mfd_cell rk808s[] = {
 155         { .name = "rk808-clkout", },
 156         { .name = "rk808-regulator", },
 157         {
 158                 .name = "rk808-rtc",
 159                 .num_resources = ARRAY_SIZE(rtc_resources),
 160                 .resources = rtc_resources,
 161         },
 162 };
 163
 164 static const struct mfd_cell rk817s[] = {
 165         { .name = "rk808-clkout",},
 166         { .name = "rk808-regulator",},
 167         {
 168                 .name = "rk805-pwrkey",
 169                 .num_resources = ARRAY_SIZE(rk817_pwrkey_resources),
 170                 .resources = &rk817_pwrkey_resources[0],
 171         },
 172         {
 173                 .name = "rk808-rtc",
 174                 .num_resources = ARRAY_SIZE(rk817_rtc_resources),
 175                 .resources = &rk817_rtc_resources[0],
 176         },
 177         { .name = "rk817-codec",},
 178         {
 179                 .name = "rk817-charger",
 180                 .num_resources = ARRAY_SIZE(rk817_charger_resources),
 181                 .resources = &rk817_charger_resources[0],
 182         },
 183 };
 184
 185 static const struct mfd_cell rk818s[] = {
 186         { .name = "rk808-clkout", },
 187         { .name = "rk808-regulator", },
 188         {
 189                 .name = "rk808-rtc",
 190                 .num_resources = ARRAY_SIZE(rtc_resources),
 191                 .resources = rtc_resources,
 192         },
 193 };
 194
 195 static const struct rk808_reg_data rk805_pre_init_reg[] = {
 196         {RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
 197                                  RK805_BUCK1_2_ILMAX_4000MA},
 198         {RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
 199                                  RK805_BUCK1_2_ILMAX_4000MA},
 200         {RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
 201                                  RK805_BUCK3_ILMAX_3000MA},
 202         {RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
 203                                  RK805_BUCK4_ILMAX_3500MA},
 204         {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
 205         {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
 206 };
 207
 208 static const struct rk808_reg_data rk808_pre_init_reg[] = {
 209         { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_150MA },
 210         { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_200MA },
 211         { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
 212         { RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK,  BUCK_ILMIN_200MA },
 213         { RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_200MA },
 214         { RK808_DCDC_UV_ACT_REG,  BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
 215         { RK808_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
 216                                                     VB_LO_SEL_3500MV },
 217 };
 218
 219 static const struct rk808_reg_data rk817_pre_init_reg[] = {
 220         {RK817_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
 221         /* Codec specific registers */
 222         { RK817_CODEC_DTOP_VUCTL, MASK_ALL, 0x03 },
 223         { RK817_CODEC_DTOP_VUCTIME, MASK_ALL, 0x00 },
 224         { RK817_CODEC_DTOP_LPT_SRST, MASK_ALL, 0x00 },
 225         { RK817_CODEC_DTOP_DIGEN_CLKE, MASK_ALL, 0x00 },
 226         /* from vendor driver, CODEC_AREF_RTCFG0 not defined in data sheet */
 227         { RK817_CODEC_AREF_RTCFG0, MASK_ALL, 0x00 },
 228         { RK817_CODEC_AREF_RTCFG1, MASK_ALL, 0x06 },
 229         { RK817_CODEC_AADC_CFG0, MASK_ALL, 0xc8 },
 230         /* from vendor driver, CODEC_AADC_CFG1 not defined in data sheet */
 231         { RK817_CODEC_AADC_CFG1, MASK_ALL, 0x00 },
 232         { RK817_CODEC_DADC_VOLL, MASK_ALL, 0x00 },
 233         { RK817_CODEC_DADC_VOLR, MASK_ALL, 0x00 },
 234         { RK817_CODEC_DADC_SR_ACL0, MASK_ALL, 0x00 },
 235         { RK817_CODEC_DADC_ALC1, MASK_ALL, 0x00 },
 236         { RK817_CODEC_DADC_ALC2, MASK_ALL, 0x00 },
 237         { RK817_CODEC_DADC_NG, MASK_ALL, 0x00 },
 238         { RK817_CODEC_DADC_HPF, MASK_ALL, 0x00 },
 239         { RK817_CODEC_DADC_RVOLL, MASK_ALL, 0xff },
 240         { RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
 241         { RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
 242         { RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
 243         { RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
 244         { RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
 245         { RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
 246         { RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
 247         { RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
 248         /* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
 249         { RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
 250         { RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
 251         { RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
 252         { RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
 253         { RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
 254         { RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
 255         { RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
 256         { RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
 257         { RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
 258         { RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
 259         { RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
 260         { RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
 261         { RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
 262         { RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
 263         { RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
 264         { RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
 265         { RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
 266         { RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
 267         /* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
 268         { RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
 269         { RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
 270         { RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
 271         { RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
 272         { RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
 273         { RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
 274         { RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
 275         { RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
 276         { RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
 277         { RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
 278         { RK817_CODEC_DDAC_RVOLR, MASK_ALL, 0xff },
 279         { RK817_CODEC_AHP_ANTI0, MASK_ALL, 0x00 },
 280         { RK817_CODEC_AHP_ANTI1, MASK_ALL, 0x00 },
 281         { RK817_CODEC_AHP_CFG0, MASK_ALL, 0xe0 },
 282         { RK817_CODEC_AHP_CFG1, MASK_ALL, 0x1f },
 283         { RK817_CODEC_AHP_CP, MASK_ALL, 0x09 },
 284         { RK817_CODEC_ACLASSD_CFG1, MASK_ALL, 0x69 },
 285         { RK817_CODEC_ACLASSD_CFG2, MASK_ALL, 0x44 },
 286         { RK817_CODEC_APLL_CFG0, MASK_ALL, 0x04 },
 287         { RK817_CODEC_APLL_CFG1, MASK_ALL, 0x00 },
 288         { RK817_CODEC_APLL_CFG2, MASK_ALL, 0x30 },
 289         { RK817_CODEC_APLL_CFG3, MASK_ALL, 0x19 },
 290         { RK817_CODEC_APLL_CFG4, MASK_ALL, 0x65 },
 291         { RK817_CODEC_APLL_CFG5, MASK_ALL, 0x01 },
 292         { RK817_CODEC_DI2S_CKM, MASK_ALL, 0x01 },
 293         { RK817_CODEC_DI2S_RSD, MASK_ALL, 0x00 },
 294         { RK817_CODEC_DI2S_RXCR1, MASK_ALL, 0x00 },
 295         { RK817_CODEC_DI2S_RXCR2, MASK_ALL, 0x17 },
 296         { RK817_CODEC_DI2S_RXCMD_TSD, MASK_ALL, 0x00 },
 297         { RK817_CODEC_DI2S_TXCR1, MASK_ALL, 0x00 },
 298         { RK817_CODEC_DI2S_TXCR2, MASK_ALL, 0x17 },
 299         { RK817_CODEC_DI2S_TXCR3_TXCMD, MASK_ALL, 0x00 },
 300         {RK817_GPIO_INT_CFG, RK817_INT_POL_MSK, RK817_INT_POL_L},
 301         {RK817_SYS_CFG(1), RK817_HOTDIE_TEMP_MSK | RK817_TSD_TEMP_MSK,
 302                                            RK817_HOTDIE_105 | RK817_TSD_140},
 303 };
 304
 305 static const struct rk808_reg_data rk818_pre_init_reg[] = {
 306         /* improve efficiency */
 307         { RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_250MA },
 308         { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_250MA },
 309         { RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
 310         { RK818_USB_CTRL_REG,     RK818_USB_ILIM_SEL_MASK,
 311                                                     RK818_USB_ILMIN_2000MA },
 312         /* close charger when usb lower then 3.4V */
 313         { RK818_USB_CTRL_REG,     RK818_USB_CHG_SD_VSEL_MASK,
 314                                                     (0x7 << 4) },
 315         /* no action when vref */
 316         { RK818_H5V_EN_REG,       BIT(1),           RK818_REF_RDY_CTRL },
 317         /* enable HDMI 5V */
 318         { RK818_H5V_EN_REG,       BIT(0),           RK818_H5V_EN },
 319         { RK808_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
 320                                                     VB_LO_SEL_3500MV },
 321 };
 322
 323 static const struct regmap_irq rk805_irqs[] = {
 324         [RK805_IRQ_PWRON_RISE] = {
 325                 .mask = RK805_IRQ_PWRON_RISE_MSK,
 326                 .reg_offset = 0,
 327         },
 328         [RK805_IRQ_VB_LOW] = {
 329                 .mask = RK805_IRQ_VB_LOW_MSK,
 330                 .reg_offset = 0,
 331         },
 332         [RK805_IRQ_PWRON] = {
 333                 .mask = RK805_IRQ_PWRON_MSK,
 334                 .reg_offset = 0,
 335         },
 336         [RK805_IRQ_PWRON_LP] = {
 337                 .mask = RK805_IRQ_PWRON_LP_MSK,
 338                 .reg_offset = 0,
 339         },
 340         [RK805_IRQ_HOTDIE] = {
 341                 .mask = RK805_IRQ_HOTDIE_MSK,
 342                 .reg_offset = 0,
 343         },
 344         [RK805_IRQ_RTC_ALARM] = {
 345                 .mask = RK805_IRQ_RTC_ALARM_MSK,
 346                 .reg_offset = 0,
 347         },
 348         [RK805_IRQ_RTC_PERIOD] = {
 349                 .mask = RK805_IRQ_RTC_PERIOD_MSK,
 350                 .reg_offset = 0,
 351         },
 352         [RK805_IRQ_PWRON_FALL] = {
 353                 .mask = RK805_IRQ_PWRON_FALL_MSK,
 354                 .reg_offset = 0,
 355         },
 356 };
 357
 358 static const struct regmap_irq rk808_irqs[] = {
 359         /* INT_STS */
 360         [RK808_IRQ_VOUT_LO] = {
 361                 .mask = RK808_IRQ_VOUT_LO_MSK,
 362                 .reg_offset = 0,
 363         },
 364         [RK808_IRQ_VB_LO] = {
 365                 .mask = RK808_IRQ_VB_LO_MSK,
 366                 .reg_offset = 0,
 367         },
 368         [RK808_IRQ_PWRON] = {
 369                 .mask = RK808_IRQ_PWRON_MSK,
 370                 .reg_offset = 0,
 371         },
 372         [RK808_IRQ_PWRON_LP] = {
 373                 .mask = RK808_IRQ_PWRON_LP_MSK,
 374                 .reg_offset = 0,
 375         },
 376         [RK808_IRQ_HOTDIE] = {
 377                 .mask = RK808_IRQ_HOTDIE_MSK,
 378                 .reg_offset = 0,
 379         },
 380         [RK808_IRQ_RTC_ALARM] = {
 381                 .mask = RK808_IRQ_RTC_ALARM_MSK,
 382                 .reg_offset = 0,
 383         },
 384         [RK808_IRQ_RTC_PERIOD] = {
 385                 .mask = RK808_IRQ_RTC_PERIOD_MSK,
 386                 .reg_offset = 0,
 387         },
 388
 389         /* INT_STS2 */
 390         [RK808_IRQ_PLUG_IN_INT] = {
 391                 .mask = RK808_IRQ_PLUG_IN_INT_MSK,
 392                 .reg_offset = 1,
 393         },
 394         [RK808_IRQ_PLUG_OUT_INT] = {
 395                 .mask = RK808_IRQ_PLUG_OUT_INT_MSK,
 396                 .reg_offset = 1,
 397         },
 398 };
 399
 400 static const struct regmap_irq rk818_irqs[] = {
 401         /* INT_STS */
 402         [RK818_IRQ_VOUT_LO] = {
 403                 .mask = RK818_IRQ_VOUT_LO_MSK,
 404                 .reg_offset = 0,
 405         },
 406         [RK818_IRQ_VB_LO] = {
 407                 .mask = RK818_IRQ_VB_LO_MSK,
 408                 .reg_offset = 0,
 409         },
 410         [RK818_IRQ_PWRON] = {
 411                 .mask = RK818_IRQ_PWRON_MSK,
 412                 .reg_offset = 0,
 413         },
 414         [RK818_IRQ_PWRON_LP] = {
 415                 .mask = RK818_IRQ_PWRON_LP_MSK,
 416                 .reg_offset = 0,
 417         },
 418         [RK818_IRQ_HOTDIE] = {
 419                 .mask = RK818_IRQ_HOTDIE_MSK,
 420                 .reg_offset = 0,
 421         },
 422         [RK818_IRQ_RTC_ALARM] = {
 423                 .mask = RK818_IRQ_RTC_ALARM_MSK,
 424                 .reg_offset = 0,
 425         },
 426         [RK818_IRQ_RTC_PERIOD] = {
 427                 .mask = RK818_IRQ_RTC_PERIOD_MSK,
 428                 .reg_offset = 0,
 429         },
 430         [RK818_IRQ_USB_OV] = {
 431                 .mask = RK818_IRQ_USB_OV_MSK,
 432                 .reg_offset = 0,
 433         },
 434
 435         /* INT_STS2 */
 436         [RK818_IRQ_PLUG_IN] = {
 437                 .mask = RK818_IRQ_PLUG_IN_MSK,
 438                 .reg_offset = 1,
 439         },
 440         [RK818_IRQ_PLUG_OUT] = {
 441                 .mask = RK818_IRQ_PLUG_OUT_MSK,
 442                 .reg_offset = 1,
 443         },
 444         [RK818_IRQ_CHG_OK] = {
 445                 .mask = RK818_IRQ_CHG_OK_MSK,
 446                 .reg_offset = 1,
 447         },
 448         [RK818_IRQ_CHG_TE] = {
 449                 .mask = RK818_IRQ_CHG_TE_MSK,
 450                 .reg_offset = 1,
 451         },
 452         [RK818_IRQ_CHG_TS1] = {
 453                 .mask = RK818_IRQ_CHG_TS1_MSK,
 454                 .reg_offset = 1,
 455         },
 456         [RK818_IRQ_TS2] = {
 457                 .mask = RK818_IRQ_TS2_MSK,
 458                 .reg_offset = 1,
 459         },
 460         [RK818_IRQ_CHG_CVTLIM] = {
 461                 .mask = RK818_IRQ_CHG_CVTLIM_MSK,
 462                 .reg_offset = 1,
 463         },
 464         [RK818_IRQ_DISCHG_ILIM] = {
 465                 .mask = RK818_IRQ_DISCHG_ILIM_MSK,
 466                 .reg_offset = 1,
 467         },
 468 };
 469
 470 static const struct regmap_irq rk817_irqs[RK817_IRQ_END] = {
 471         REGMAP_IRQ_REG_LINE(0, 8),
 472         REGMAP_IRQ_REG_LINE(1, 8),
 473         REGMAP_IRQ_REG_LINE(2, 8),
 474         REGMAP_IRQ_REG_LINE(3, 8),
 475         REGMAP_IRQ_REG_LINE(4, 8),
 476         REGMAP_IRQ_REG_LINE(5, 8),
 477         REGMAP_IRQ_REG_LINE(6, 8),
 478         REGMAP_IRQ_REG_LINE(7, 8),
 479         REGMAP_IRQ_REG_LINE(8, 8),
 480         REGMAP_IRQ_REG_LINE(9, 8),
 481         REGMAP_IRQ_REG_LINE(10, 8),
 482         REGMAP_IRQ_REG_LINE(11, 8),
 483         REGMAP_IRQ_REG_LINE(12, 8),
 484         REGMAP_IRQ_REG_LINE(13, 8),
 485         REGMAP_IRQ_REG_LINE(14, 8),
 486         REGMAP_IRQ_REG_LINE(15, 8),
 487         REGMAP_IRQ_REG_LINE(16, 8),
 488         REGMAP_IRQ_REG_LINE(17, 8),
 489         REGMAP_IRQ_REG_LINE(18, 8),
 490         REGMAP_IRQ_REG_LINE(19, 8),
 491         REGMAP_IRQ_REG_LINE(20, 8),
 492         REGMAP_IRQ_REG_LINE(21, 8),
 493         REGMAP_IRQ_REG_LINE(22, 8),
 494         REGMAP_IRQ_REG_LINE(23, 8)
 495 };
 496
 497 static struct regmap_irq_chip rk805_irq_chip = {
 498         .name = "rk805",
 499         .irqs = rk805_irqs,
 500         .num_irqs = ARRAY_SIZE(rk805_irqs),
 501         .num_regs = 1,
 502         .status_base = RK805_INT_STS_REG,
 503         .mask_base = RK805_INT_STS_MSK_REG,
 504         .ack_base = RK805_INT_STS_REG,
 505         .init_ack_masked = true,
 506 };
 507
 508 static const struct regmap_irq_chip rk808_irq_chip = {
 509         .name = "rk808",
 510         .irqs = rk808_irqs,
 511         .num_irqs = ARRAY_SIZE(rk808_irqs),
 512         .num_regs = 2,
 513         .irq_reg_stride = 2,
 514         .status_base = RK808_INT_STS_REG1,
 515         .mask_base = RK808_INT_STS_MSK_REG1,
 516         .ack_base = RK808_INT_STS_REG1,
 517         .init_ack_masked = true,
 518 };
 519
 520 static struct regmap_irq_chip rk817_irq_chip = {
 521         .name = "rk817",
 522         .irqs = rk817_irqs,
 523         .num_irqs = ARRAY_SIZE(rk817_irqs),
 524         .num_regs = 3,
 525         .irq_reg_stride = 2,
 526         .status_base = RK817_INT_STS_REG0,
 527         .mask_base = RK817_INT_STS_MSK_REG0,
 528         .ack_base = RK817_INT_STS_REG0,
 529         .init_ack_masked = true,
 530 };
 531
 532 static const struct regmap_irq_chip rk818_irq_chip = {
 533         .name = "rk818",
 534         .irqs = rk818_irqs,
 535         .num_irqs = ARRAY_SIZE(rk818_irqs),
 536         .num_regs = 2,
 537         .irq_reg_stride = 2,
 538         .status_base = RK818_INT_STS_REG1,
 539         .mask_base = RK818_INT_STS_MSK_REG1,
 540         .ack_base = RK818_INT_STS_REG1,
 541         .init_ack_masked = true,
 542 };
 543
 544 static struct i2c_client *rk808_i2c_client;
 545
 546 static void rk808_pm_power_off(void)
 547 {
 548         int ret;
 549         unsigned int reg, bit;
 550         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 551
 552         switch (rk808->variant) {
 553         case RK805_ID:
 554                 reg = RK805_DEV_CTRL_REG;
 555                 bit = DEV_OFF;
 556                 break;
 557         case RK808_ID:
 558                 reg = RK808_DEVCTRL_REG,
 559                 bit = DEV_OFF_RST;
 560                 break;
 561         case RK809_ID:
 562         case RK817_ID:
 563                 reg = RK817_SYS_CFG(3);
 564                 bit = DEV_OFF;
 565                 break;
 566         case RK818_ID:
 567                 reg = RK818_DEVCTRL_REG;
 568                 bit = DEV_OFF;
 569                 break;
 570         default:
 571                 return;
 572         }
 573         ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
 574         if (ret)
 575                 dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
 576 }
 577
 578 static int rk808_restart_notify(struct notifier_block *this, unsigned long mode, void *cmd)
 579 {
 580         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 581         unsigned int reg, bit;
 582         int ret;
 583
 584         switch (rk808->variant) {
 585         case RK809_ID:
 586         case RK817_ID:
 587                 reg = RK817_SYS_CFG(3);
 588                 bit = DEV_RST;
 589                 break;
 590
 591         default:
 592                 return NOTIFY_DONE;
 593         }
 594         ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
 595         if (ret)
 596                 dev_err(&rk808_i2c_client->dev, "Failed to restart device!\n");
 597
 598         return NOTIFY_DONE;
 599 }
 600
 601 static struct notifier_block rk808_restart_handler = {
 602         .notifier_call = rk808_restart_notify,
 603         .priority = 192,
 604 };
 605
 606 static void rk8xx_shutdown(struct i2c_client *client)
 607 {
 608         struct rk808 *rk808 = i2c_get_clientdata(client);
 609         int ret;
 610
 611         switch (rk808->variant) {
 612         case RK805_ID:
 613                 ret = regmap_update_bits(rk808->regmap,
 614                                          RK805_GPIO_IO_POL_REG,
 615                                          SLP_SD_MSK,
 616                                          SHUTDOWN_FUN);
 617                 break;
 618         case RK809_ID:
 619         case RK817_ID:
 620                 ret = regmap_update_bits(rk808->regmap,
 621                                          RK817_SYS_CFG(3),
 622                                          RK817_SLPPIN_FUNC_MSK,
 623                                          SLPPIN_DN_FUN);
 624                 break;
 625         default:
 626                 return;
 627         }
 628         if (ret)
 629                 dev_warn(&client->dev,
 630                          "Cannot switch to power down function\n");
 631 }
 632
 633 static const struct of_device_id rk808_of_match[] = {
 634         { .compatible = "rockchip,rk805" },
 635         { .compatible = "rockchip,rk808" },
 636         { .compatible = "rockchip,rk809" },
 637         { .compatible = "rockchip,rk817" },
 638         { .compatible = "rockchip,rk818" },
 639         { },
 640 };
 641 MODULE_DEVICE_TABLE(of, rk808_of_match);
 642
 643 static int rk808_probe(struct i2c_client *client,
 644                        const struct i2c_device_id *id)
 645 {
 646         struct device_node *np = client->dev.of_node;
 647         struct rk808 *rk808;
 648         const struct rk808_reg_data *pre_init_reg;
 649         const struct mfd_cell *cells;
 650         int nr_pre_init_regs;
 651         int nr_cells;
 652         int msb, lsb;
 653         unsigned char pmic_id_msb, pmic_id_lsb;
 654         int ret;
 655         int i;
 656
 657         rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
 658         if (!rk808)
 659                 return -ENOMEM;
 660
 661         if (of_device_is_compatible(np, "rockchip,rk817") ||
 662             of_device_is_compatible(np, "rockchip,rk809")) {
 663                 pmic_id_msb = RK817_ID_MSB;
 664                 pmic_id_lsb = RK817_ID_LSB;
 665         } else {
 666                 pmic_id_msb = RK808_ID_MSB;
 667                 pmic_id_lsb = RK808_ID_LSB;
 668         }
 669
 670         /* Read chip variant */
 671         msb = i2c_smbus_read_byte_data(client, pmic_id_msb);
 672         if (msb < 0) {
 673                 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
 674                         RK808_ID_MSB);
 675                 return msb;
 676         }
 677
 678         lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
 679         if (lsb < 0) {
 680                 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
 681                         RK808_ID_LSB);
 682                 return lsb;
 683         }
 684
 685         rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
 686         dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
 687
 688         switch (rk808->variant) {
 689         case RK805_ID:
 690                 rk808->regmap_cfg = &rk805_regmap_config;
 691                 rk808->regmap_irq_chip = &rk805_irq_chip;
 692                 pre_init_reg = rk805_pre_init_reg;
 693                 nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
 694                 cells = rk805s;
 695                 nr_cells = ARRAY_SIZE(rk805s);
 696                 break;
 697         case RK808_ID:
 698                 rk808->regmap_cfg = &rk808_regmap_config;
 699                 rk808->regmap_irq_chip = &rk808_irq_chip;
 700                 pre_init_reg = rk808_pre_init_reg;
 701                 nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
 702                 cells = rk808s;
 703                 nr_cells = ARRAY_SIZE(rk808s);
 704                 break;
 705         case RK818_ID:
 706                 rk808->regmap_cfg = &rk818_regmap_config;
 707                 rk808->regmap_irq_chip = &rk818_irq_chip;
 708                 pre_init_reg = rk818_pre_init_reg;
 709                 nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
 710                 cells = rk818s;
 711                 nr_cells = ARRAY_SIZE(rk818s);
 712                 break;
 713         case RK809_ID:
 714         case RK817_ID:
 715                 rk808->regmap_cfg = &rk817_regmap_config;
 716                 rk808->regmap_irq_chip = &rk817_irq_chip;
 717                 pre_init_reg = rk817_pre_init_reg;
 718                 nr_pre_init_regs = ARRAY_SIZE(rk817_pre_init_reg);
 719                 cells = rk817s;
 720                 nr_cells = ARRAY_SIZE(rk817s);
 721                 break;
 722         default:
 723                 dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
 724                         rk808->variant);
 725                 return -EINVAL;
 726         }
 727
 728         rk808->i2c = client;
 729         i2c_set_clientdata(client, rk808);
 730
 731         rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
 732         if (IS_ERR(rk808->regmap)) {
 733                 dev_err(&client->dev, "regmap initialization failed\n");
 734                 return PTR_ERR(rk808->regmap);
 735         }
 736
 737         if (!client->irq) {
 738                 dev_err(&client->dev, "No interrupt support, no core IRQ\n");
 739                 return -EINVAL;
 740         }
 741
 742         ret = regmap_add_irq_chip(rk808->regmap, client->irq,
 743                                   IRQF_ONESHOT, -1,
 744                                   rk808->regmap_irq_chip, &rk808->irq_data);
 745         if (ret) {
 746                 dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
 747                 return ret;
 748         }
 749
 750         for (i = 0; i < nr_pre_init_regs; i++) {
 751                 ret = regmap_update_bits(rk808->regmap,
 752                                         pre_init_reg[i].addr,
 753                                         pre_init_reg[i].mask,
 754                                         pre_init_reg[i].value);
 755                 if (ret) {
 756                         dev_err(&client->dev,
 757                                 "0x%x write err\n",
 758                                 pre_init_reg[i].addr);
 759                         return ret;
 760                 }
 761         }
 762
 763         ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
 764                               cells, nr_cells, NULL, 0,
 765                               regmap_irq_get_domain(rk808->irq_data));
 766         if (ret) {
 767                 dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
 768                 goto err_irq;
 769         }
 770
 771         if (of_property_read_bool(np, "rockchip,system-power-controller")) {
 772                 rk808_i2c_client = client;
 773                 pm_power_off = rk808_pm_power_off;
 774
 775                 switch (rk808->variant) {
 776                 case RK809_ID:
 777                 case RK817_ID:
 778                         ret = register_restart_handler(&rk808_restart_handler);
 779                         if (ret)
 780                                 dev_warn(&client->dev, "failed to register rst handler, %d\n", ret);
 781                         break;
 782                 default:
 783                         dev_dbg(&client->dev, "pmic controlled board reset not supported\n");
 784                         break;
 785                 }
 786         }
 787
 788         return 0;
 789
 790 err_irq:
 791         regmap_del_irq_chip(client->irq, rk808->irq_data);
 792         return ret;
 793 }
 794
 795 static void rk808_remove(struct i2c_client *client)
 796 {
 797         struct rk808 *rk808 = i2c_get_clientdata(client);
 798
 799         regmap_del_irq_chip(client->irq, rk808->irq_data);
 800
 801         /**
 802          * pm_power_off may points to a function from another module.
 803          * Check if the pointer is set by us and only then overwrite it.
 804          */
 805         if (pm_power_off == rk808_pm_power_off)
 806                 pm_power_off = NULL;
 807
 808         unregister_restart_handler(&rk808_restart_handler);
 809 }
 810
 811 static int __maybe_unused rk8xx_suspend(struct device *dev)
 812 {
 813         struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
 814         int ret = 0;
 815
 816         switch (rk808->variant) {
 817         case RK805_ID:
 818                 ret = regmap_update_bits(rk808->regmap,
 819                                          RK805_GPIO_IO_POL_REG,
 820                                          SLP_SD_MSK,
 821                                          SLEEP_FUN);
 822                 break;
 823         case RK809_ID:
 824         case RK817_ID:
 825                 ret = regmap_update_bits(rk808->regmap,
 826                                          RK817_SYS_CFG(3),
 827                                          RK817_SLPPIN_FUNC_MSK,
 828                                          SLPPIN_SLP_FUN);
 829                 break;
 830         default:
 831                 break;
 832         }
 833
 834         return ret;
 835 }
 836
 837 static int __maybe_unused rk8xx_resume(struct device *dev)
 838 {
 839         struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
 840         int ret = 0;
 841
 842         switch (rk808->variant) {
 843         case RK809_ID:
 844         case RK817_ID:
 845                 ret = regmap_update_bits(rk808->regmap,
 846                                          RK817_SYS_CFG(3),
 847                                          RK817_SLPPIN_FUNC_MSK,
 848                                          SLPPIN_NULL_FUN);
 849                 break;
 850         default:
 851                 break;
 852         }
 853
 854         return ret;
 855 }
 856 static SIMPLE_DEV_PM_OPS(rk8xx_pm_ops, rk8xx_suspend, rk8xx_resume);
 857
 858 static struct i2c_driver rk808_i2c_driver = {
 859         .driver = {
 860                 .name = "rk808",
 861                 .of_match_table = rk808_of_match,
 862                 .pm = &rk8xx_pm_ops,
 863         },
 864         .probe    = rk808_probe,
 865         .remove   = rk808_remove,
 866         .shutdown = rk8xx_shutdown,
 867 };
 868
 869 module_i2c_driver(rk808_i2c_driver);
 870
 871 MODULE_LICENSE("GPL");
 872 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
 873 MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
 874 MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
 875 MODULE_DESCRIPTION("RK808/RK818 PMIC driver");