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