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