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_INT_STS_REG0:
  71         case RK817_INT_STS_REG1:
  72         case RK817_INT_STS_REG2:
  73         case RK817_SYS_STS:
  74                 return true;
  75         }
  76
  77         return true;
  78 }
  79
  80 static const struct regmap_config rk818_regmap_config = {
  81         .reg_bits = 8,
  82         .val_bits = 8,
  83         .max_register = RK818_USB_CTRL_REG,
  84         .cache_type = REGCACHE_RBTREE,
  85         .volatile_reg = rk808_is_volatile_reg,
  86 };
  87
  88 static const struct regmap_config rk805_regmap_config = {
  89         .reg_bits = 8,
  90         .val_bits = 8,
  91         .max_register = RK805_OFF_SOURCE_REG,
  92         .cache_type = REGCACHE_RBTREE,
  93         .volatile_reg = rk808_is_volatile_reg,
  94 };
  95
  96 static const struct regmap_config rk808_regmap_config = {
  97         .reg_bits = 8,
  98         .val_bits = 8,
  99         .max_register = RK808_IO_POL_REG,
 100         .cache_type = REGCACHE_RBTREE,
 101         .volatile_reg = rk808_is_volatile_reg,
 102 };
 103
 104 static const struct regmap_config rk817_regmap_config = {
 105         .reg_bits = 8,
 106         .val_bits = 8,
 107         .max_register = RK817_GPIO_INT_CFG,
 108         .cache_type = REGCACHE_NONE,
 109         .volatile_reg = rk817_is_volatile_reg,
 110 };
 111
 112 static const struct resource rtc_resources[] = {
 113         DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
 114 };
 115
 116 static const struct resource rk817_rtc_resources[] = {
 117         DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
 118 };
 119
 120 static const struct resource rk805_key_resources[] = {
 121         DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE),
 122         DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL),
 123 };
 124
 125 static const struct resource rk817_pwrkey_resources[] = {
 126         DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE),
 127         DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL),
 128 };
 129
 130 static const struct mfd_cell rk805s[] = {
 131         { .name = "rk808-clkout", },
 132         { .name = "rk808-regulator", },
 133         { .name = "rk805-pinctrl", },
 134         {
 135                 .name = "rk808-rtc",
 136                 .num_resources = ARRAY_SIZE(rtc_resources),
 137                 .resources = &rtc_resources[0],
 138         },
 139         {       .name = "rk805-pwrkey",
 140                 .num_resources = ARRAY_SIZE(rk805_key_resources),
 141                 .resources = &rk805_key_resources[0],
 142         },
 143 };
 144
 145 static const struct mfd_cell rk808s[] = {
 146         { .name = "rk808-clkout", },
 147         { .name = "rk808-regulator", },
 148         {
 149                 .name = "rk808-rtc",
 150                 .num_resources = ARRAY_SIZE(rtc_resources),
 151                 .resources = rtc_resources,
 152         },
 153 };
 154
 155 static const struct mfd_cell rk817s[] = {
 156         { .name = "rk808-clkout",},
 157         { .name = "rk808-regulator",},
 158         {
 159                 .name = "rk805-pwrkey",
 160                 .num_resources = ARRAY_SIZE(rk817_pwrkey_resources),
 161                 .resources = &rk817_pwrkey_resources[0],
 162         },
 163         {
 164                 .name = "rk808-rtc",
 165                 .num_resources = ARRAY_SIZE(rk817_rtc_resources),
 166                 .resources = &rk817_rtc_resources[0],
 167         },
 168         { .name = "rk817-codec",},
 169 };
 170
 171 static const struct mfd_cell rk818s[] = {
 172         { .name = "rk808-clkout", },
 173         { .name = "rk808-regulator", },
 174         {
 175                 .name = "rk808-rtc",
 176                 .num_resources = ARRAY_SIZE(rtc_resources),
 177                 .resources = rtc_resources,
 178         },
 179 };
 180
 181 static const struct rk808_reg_data rk805_pre_init_reg[] = {
 182         {RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
 183                                  RK805_BUCK1_2_ILMAX_4000MA},
 184         {RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
 185                                  RK805_BUCK1_2_ILMAX_4000MA},
 186         {RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
 187                                  RK805_BUCK3_ILMAX_3000MA},
 188         {RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
 189                                  RK805_BUCK4_ILMAX_3500MA},
 190         {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
 191         {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
 192 };
 193
 194 static const struct rk808_reg_data rk808_pre_init_reg[] = {
 195         { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_150MA },
 196         { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_200MA },
 197         { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
 198         { RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK,  BUCK_ILMIN_200MA },
 199         { RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_200MA },
 200         { RK808_DCDC_UV_ACT_REG,  BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
 201         { RK808_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
 202                                                     VB_LO_SEL_3500MV },
 203 };
 204
 205 static const struct rk808_reg_data rk817_pre_init_reg[] = {
 206         {RK817_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
 207         /* Codec specific registers */
 208         { RK817_CODEC_DTOP_VUCTL, MASK_ALL, 0x03 },
 209         { RK817_CODEC_DTOP_VUCTIME, MASK_ALL, 0x00 },
 210         { RK817_CODEC_DTOP_LPT_SRST, MASK_ALL, 0x00 },
 211         { RK817_CODEC_DTOP_DIGEN_CLKE, MASK_ALL, 0x00 },
 212         /* from vendor driver, CODEC_AREF_RTCFG0 not defined in data sheet */
 213         { RK817_CODEC_AREF_RTCFG0, MASK_ALL, 0x00 },
 214         { RK817_CODEC_AREF_RTCFG1, MASK_ALL, 0x06 },
 215         { RK817_CODEC_AADC_CFG0, MASK_ALL, 0xc8 },
 216         /* from vendor driver, CODEC_AADC_CFG1 not defined in data sheet */
 217         { RK817_CODEC_AADC_CFG1, MASK_ALL, 0x00 },
 218         { RK817_CODEC_DADC_VOLL, MASK_ALL, 0x00 },
 219         { RK817_CODEC_DADC_VOLR, MASK_ALL, 0x00 },
 220         { RK817_CODEC_DADC_SR_ACL0, MASK_ALL, 0x00 },
 221         { RK817_CODEC_DADC_ALC1, MASK_ALL, 0x00 },
 222         { RK817_CODEC_DADC_ALC2, MASK_ALL, 0x00 },
 223         { RK817_CODEC_DADC_NG, MASK_ALL, 0x00 },
 224         { RK817_CODEC_DADC_HPF, MASK_ALL, 0x00 },
 225         { RK817_CODEC_DADC_RVOLL, MASK_ALL, 0xff },
 226         { RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
 227         { RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
 228         { RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
 229         { RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
 230         { RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
 231         { RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
 232         { RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
 233         { RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
 234         /* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
 235         { RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
 236         { RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
 237         { RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
 238         { RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
 239         { RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
 240         { RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
 241         { RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
 242         { RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
 243         { RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
 244         { RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
 245         { RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
 246         { RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
 247         { RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
 248         { RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
 249         { RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
 250         { RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
 251         { RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
 252         { RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
 253         /* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
 254         { RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
 255         { RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
 256         { RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
 257         { RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
 258         { RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
 259         { RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
 260         { RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
 261         { RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
 262         { RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
 263         { RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
 264         { RK817_CODEC_DDAC_RVOLR, MASK_ALL, 0xff },
 265         { RK817_CODEC_AHP_ANTI0, MASK_ALL, 0x00 },
 266         { RK817_CODEC_AHP_ANTI1, MASK_ALL, 0x00 },
 267         { RK817_CODEC_AHP_CFG0, MASK_ALL, 0xe0 },
 268         { RK817_CODEC_AHP_CFG1, MASK_ALL, 0x1f },
 269         { RK817_CODEC_AHP_CP, MASK_ALL, 0x09 },
 270         { RK817_CODEC_ACLASSD_CFG1, MASK_ALL, 0x69 },
 271         { RK817_CODEC_ACLASSD_CFG2, MASK_ALL, 0x44 },
 272         { RK817_CODEC_APLL_CFG0, MASK_ALL, 0x04 },
 273         { RK817_CODEC_APLL_CFG1, MASK_ALL, 0x00 },
 274         { RK817_CODEC_APLL_CFG2, MASK_ALL, 0x30 },
 275         { RK817_CODEC_APLL_CFG3, MASK_ALL, 0x19 },
 276         { RK817_CODEC_APLL_CFG4, MASK_ALL, 0x65 },
 277         { RK817_CODEC_APLL_CFG5, MASK_ALL, 0x01 },
 278         { RK817_CODEC_DI2S_CKM, MASK_ALL, 0x01 },
 279         { RK817_CODEC_DI2S_RSD, MASK_ALL, 0x00 },
 280         { RK817_CODEC_DI2S_RXCR1, MASK_ALL, 0x00 },
 281         { RK817_CODEC_DI2S_RXCR2, MASK_ALL, 0x17 },
 282         { RK817_CODEC_DI2S_RXCMD_TSD, MASK_ALL, 0x00 },
 283         { RK817_CODEC_DI2S_TXCR1, MASK_ALL, 0x00 },
 284         { RK817_CODEC_DI2S_TXCR2, MASK_ALL, 0x17 },
 285         { RK817_CODEC_DI2S_TXCR3_TXCMD, MASK_ALL, 0x00 },
 286         {RK817_GPIO_INT_CFG, RK817_INT_POL_MSK, RK817_INT_POL_L},
 287         {RK817_SYS_CFG(1), RK817_HOTDIE_TEMP_MSK | RK817_TSD_TEMP_MSK,
 288                                            RK817_HOTDIE_105 | RK817_TSD_140},
 289 };
 290
 291 static const struct rk808_reg_data rk818_pre_init_reg[] = {
 292         /* improve efficiency */
 293         { RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_250MA },
 294         { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_250MA },
 295         { RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
 296         { RK818_USB_CTRL_REG,     RK818_USB_ILIM_SEL_MASK,
 297                                                     RK818_USB_ILMIN_2000MA },
 298         /* close charger when usb lower then 3.4V */
 299         { RK818_USB_CTRL_REG,     RK818_USB_CHG_SD_VSEL_MASK,
 300                                                     (0x7 << 4) },
 301         /* no action when vref */
 302         { RK818_H5V_EN_REG,       BIT(1),           RK818_REF_RDY_CTRL },
 303         /* enable HDMI 5V */
 304         { RK818_H5V_EN_REG,       BIT(0),           RK818_H5V_EN },
 305         { RK808_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
 306                                                     VB_LO_SEL_3500MV },
 307 };
 308
 309 static const struct regmap_irq rk805_irqs[] = {
 310         [RK805_IRQ_PWRON_RISE] = {
 311                 .mask = RK805_IRQ_PWRON_RISE_MSK,
 312                 .reg_offset = 0,
 313         },
 314         [RK805_IRQ_VB_LOW] = {
 315                 .mask = RK805_IRQ_VB_LOW_MSK,
 316                 .reg_offset = 0,
 317         },
 318         [RK805_IRQ_PWRON] = {
 319                 .mask = RK805_IRQ_PWRON_MSK,
 320                 .reg_offset = 0,
 321         },
 322         [RK805_IRQ_PWRON_LP] = {
 323                 .mask = RK805_IRQ_PWRON_LP_MSK,
 324                 .reg_offset = 0,
 325         },
 326         [RK805_IRQ_HOTDIE] = {
 327                 .mask = RK805_IRQ_HOTDIE_MSK,
 328                 .reg_offset = 0,
 329         },
 330         [RK805_IRQ_RTC_ALARM] = {
 331                 .mask = RK805_IRQ_RTC_ALARM_MSK,
 332                 .reg_offset = 0,
 333         },
 334         [RK805_IRQ_RTC_PERIOD] = {
 335                 .mask = RK805_IRQ_RTC_PERIOD_MSK,
 336                 .reg_offset = 0,
 337         },
 338         [RK805_IRQ_PWRON_FALL] = {
 339                 .mask = RK805_IRQ_PWRON_FALL_MSK,
 340                 .reg_offset = 0,
 341         },
 342 };
 343
 344 static const struct regmap_irq rk808_irqs[] = {
 345         /* INT_STS */
 346         [RK808_IRQ_VOUT_LO] = {
 347                 .mask = RK808_IRQ_VOUT_LO_MSK,
 348                 .reg_offset = 0,
 349         },
 350         [RK808_IRQ_VB_LO] = {
 351                 .mask = RK808_IRQ_VB_LO_MSK,
 352                 .reg_offset = 0,
 353         },
 354         [RK808_IRQ_PWRON] = {
 355                 .mask = RK808_IRQ_PWRON_MSK,
 356                 .reg_offset = 0,
 357         },
 358         [RK808_IRQ_PWRON_LP] = {
 359                 .mask = RK808_IRQ_PWRON_LP_MSK,
 360                 .reg_offset = 0,
 361         },
 362         [RK808_IRQ_HOTDIE] = {
 363                 .mask = RK808_IRQ_HOTDIE_MSK,
 364                 .reg_offset = 0,
 365         },
 366         [RK808_IRQ_RTC_ALARM] = {
 367                 .mask = RK808_IRQ_RTC_ALARM_MSK,
 368                 .reg_offset = 0,
 369         },
 370         [RK808_IRQ_RTC_PERIOD] = {
 371                 .mask = RK808_IRQ_RTC_PERIOD_MSK,
 372                 .reg_offset = 0,
 373         },
 374
 375         /* INT_STS2 */
 376         [RK808_IRQ_PLUG_IN_INT] = {
 377                 .mask = RK808_IRQ_PLUG_IN_INT_MSK,
 378                 .reg_offset = 1,
 379         },
 380         [RK808_IRQ_PLUG_OUT_INT] = {
 381                 .mask = RK808_IRQ_PLUG_OUT_INT_MSK,
 382                 .reg_offset = 1,
 383         },
 384 };
 385
 386 static const struct regmap_irq rk818_irqs[] = {
 387         /* INT_STS */
 388         [RK818_IRQ_VOUT_LO] = {
 389                 .mask = RK818_IRQ_VOUT_LO_MSK,
 390                 .reg_offset = 0,
 391         },
 392         [RK818_IRQ_VB_LO] = {
 393                 .mask = RK818_IRQ_VB_LO_MSK,
 394                 .reg_offset = 0,
 395         },
 396         [RK818_IRQ_PWRON] = {
 397                 .mask = RK818_IRQ_PWRON_MSK,
 398                 .reg_offset = 0,
 399         },
 400         [RK818_IRQ_PWRON_LP] = {
 401                 .mask = RK818_IRQ_PWRON_LP_MSK,
 402                 .reg_offset = 0,
 403         },
 404         [RK818_IRQ_HOTDIE] = {
 405                 .mask = RK818_IRQ_HOTDIE_MSK,
 406                 .reg_offset = 0,
 407         },
 408         [RK818_IRQ_RTC_ALARM] = {
 409                 .mask = RK818_IRQ_RTC_ALARM_MSK,
 410                 .reg_offset = 0,
 411         },
 412         [RK818_IRQ_RTC_PERIOD] = {
 413                 .mask = RK818_IRQ_RTC_PERIOD_MSK,
 414                 .reg_offset = 0,
 415         },
 416         [RK818_IRQ_USB_OV] = {
 417                 .mask = RK818_IRQ_USB_OV_MSK,
 418                 .reg_offset = 0,
 419         },
 420
 421         /* INT_STS2 */
 422         [RK818_IRQ_PLUG_IN] = {
 423                 .mask = RK818_IRQ_PLUG_IN_MSK,
 424                 .reg_offset = 1,
 425         },
 426         [RK818_IRQ_PLUG_OUT] = {
 427                 .mask = RK818_IRQ_PLUG_OUT_MSK,
 428                 .reg_offset = 1,
 429         },
 430         [RK818_IRQ_CHG_OK] = {
 431                 .mask = RK818_IRQ_CHG_OK_MSK,
 432                 .reg_offset = 1,
 433         },
 434         [RK818_IRQ_CHG_TE] = {
 435                 .mask = RK818_IRQ_CHG_TE_MSK,
 436                 .reg_offset = 1,
 437         },
 438         [RK818_IRQ_CHG_TS1] = {
 439                 .mask = RK818_IRQ_CHG_TS1_MSK,
 440                 .reg_offset = 1,
 441         },
 442         [RK818_IRQ_TS2] = {
 443                 .mask = RK818_IRQ_TS2_MSK,
 444                 .reg_offset = 1,
 445         },
 446         [RK818_IRQ_CHG_CVTLIM] = {
 447                 .mask = RK818_IRQ_CHG_CVTLIM_MSK,
 448                 .reg_offset = 1,
 449         },
 450         [RK818_IRQ_DISCHG_ILIM] = {
 451                 .mask = RK818_IRQ_DISCHG_ILIM_MSK,
 452                 .reg_offset = 1,
 453         },
 454 };
 455
 456 static const struct regmap_irq rk817_irqs[RK817_IRQ_END] = {
 457         REGMAP_IRQ_REG_LINE(0, 8),
 458         REGMAP_IRQ_REG_LINE(1, 8),
 459         REGMAP_IRQ_REG_LINE(2, 8),
 460         REGMAP_IRQ_REG_LINE(3, 8),
 461         REGMAP_IRQ_REG_LINE(4, 8),
 462         REGMAP_IRQ_REG_LINE(5, 8),
 463         REGMAP_IRQ_REG_LINE(6, 8),
 464         REGMAP_IRQ_REG_LINE(7, 8),
 465         REGMAP_IRQ_REG_LINE(8, 8),
 466         REGMAP_IRQ_REG_LINE(9, 8),
 467         REGMAP_IRQ_REG_LINE(10, 8),
 468         REGMAP_IRQ_REG_LINE(11, 8),
 469         REGMAP_IRQ_REG_LINE(12, 8),
 470         REGMAP_IRQ_REG_LINE(13, 8),
 471         REGMAP_IRQ_REG_LINE(14, 8),
 472         REGMAP_IRQ_REG_LINE(15, 8),
 473         REGMAP_IRQ_REG_LINE(16, 8),
 474         REGMAP_IRQ_REG_LINE(17, 8),
 475         REGMAP_IRQ_REG_LINE(18, 8),
 476         REGMAP_IRQ_REG_LINE(19, 8),
 477         REGMAP_IRQ_REG_LINE(20, 8),
 478         REGMAP_IRQ_REG_LINE(21, 8),
 479         REGMAP_IRQ_REG_LINE(22, 8),
 480         REGMAP_IRQ_REG_LINE(23, 8)
 481 };
 482
 483 static struct regmap_irq_chip rk805_irq_chip = {
 484         .name = "rk805",
 485         .irqs = rk805_irqs,
 486         .num_irqs = ARRAY_SIZE(rk805_irqs),
 487         .num_regs = 1,
 488         .status_base = RK805_INT_STS_REG,
 489         .mask_base = RK805_INT_STS_MSK_REG,
 490         .ack_base = RK805_INT_STS_REG,
 491         .init_ack_masked = true,
 492 };
 493
 494 static const struct regmap_irq_chip rk808_irq_chip = {
 495         .name = "rk808",
 496         .irqs = rk808_irqs,
 497         .num_irqs = ARRAY_SIZE(rk808_irqs),
 498         .num_regs = 2,
 499         .irq_reg_stride = 2,
 500         .status_base = RK808_INT_STS_REG1,
 501         .mask_base = RK808_INT_STS_MSK_REG1,
 502         .ack_base = RK808_INT_STS_REG1,
 503         .init_ack_masked = true,
 504 };
 505
 506 static struct regmap_irq_chip rk817_irq_chip = {
 507         .name = "rk817",
 508         .irqs = rk817_irqs,
 509         .num_irqs = ARRAY_SIZE(rk817_irqs),
 510         .num_regs = 3,
 511         .irq_reg_stride = 2,
 512         .status_base = RK817_INT_STS_REG0,
 513         .mask_base = RK817_INT_STS_MSK_REG0,
 514         .ack_base = RK817_INT_STS_REG0,
 515         .init_ack_masked = true,
 516 };
 517
 518 static const struct regmap_irq_chip rk818_irq_chip = {
 519         .name = "rk818",
 520         .irqs = rk818_irqs,
 521         .num_irqs = ARRAY_SIZE(rk818_irqs),
 522         .num_regs = 2,
 523         .irq_reg_stride = 2,
 524         .status_base = RK818_INT_STS_REG1,
 525         .mask_base = RK818_INT_STS_MSK_REG1,
 526         .ack_base = RK818_INT_STS_REG1,
 527         .init_ack_masked = true,
 528 };
 529
 530 static struct i2c_client *rk808_i2c_client;
 531
 532 static void rk808_pm_power_off(void)
 533 {
 534         int ret;
 535         unsigned int reg, bit;
 536         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 537
 538         switch (rk808->variant) {
 539         case RK805_ID:
 540                 reg = RK805_DEV_CTRL_REG;
 541                 bit = DEV_OFF;
 542                 break;
 543         case RK808_ID:
 544                 reg = RK808_DEVCTRL_REG,
 545                 bit = DEV_OFF_RST;
 546                 break;
 547         case RK809_ID:
 548         case RK817_ID:
 549                 reg = RK817_SYS_CFG(3);
 550                 bit = DEV_OFF;
 551                 break;
 552         case RK818_ID:
 553                 reg = RK818_DEVCTRL_REG;
 554                 bit = DEV_OFF;
 555                 break;
 556         default:
 557                 return;
 558         }
 559         ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
 560         if (ret)
 561                 dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
 562 }
 563
 564 static int rk808_restart_notify(struct notifier_block *this, unsigned long mode, void *cmd)
 565 {
 566         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 567         unsigned int reg, bit;
 568         int ret;
 569
 570         switch (rk808->variant) {
 571         case RK809_ID:
 572         case RK817_ID:
 573                 reg = RK817_SYS_CFG(3);
 574                 bit = DEV_RST;
 575                 break;
 576
 577         default:
 578                 return NOTIFY_DONE;
 579         }
 580         ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
 581         if (ret)
 582                 dev_err(&rk808_i2c_client->dev, "Failed to restart device!\n");
 583
 584         return NOTIFY_DONE;
 585 }
 586
 587 static struct notifier_block rk808_restart_handler = {
 588         .notifier_call = rk808_restart_notify,
 589         .priority = 192,
 590 };
 591
 592 static void rk8xx_shutdown(struct i2c_client *client)
 593 {
 594         struct rk808 *rk808 = i2c_get_clientdata(client);
 595         int ret;
 596
 597         switch (rk808->variant) {
 598         case RK805_ID:
 599                 ret = regmap_update_bits(rk808->regmap,
 600                                          RK805_GPIO_IO_POL_REG,
 601                                          SLP_SD_MSK,
 602                                          SHUTDOWN_FUN);
 603                 break;
 604         case RK809_ID:
 605         case RK817_ID:
 606                 ret = regmap_update_bits(rk808->regmap,
 607                                          RK817_SYS_CFG(3),
 608                                          RK817_SLPPIN_FUNC_MSK,
 609                                          SLPPIN_DN_FUN);
 610                 break;
 611         default:
 612                 return;
 613         }
 614         if (ret)
 615                 dev_warn(&client->dev,
 616                          "Cannot switch to power down function\n");
 617 }
 618
 619 static const struct of_device_id rk808_of_match[] = {
 620         { .compatible = "rockchip,rk805" },
 621         { .compatible = "rockchip,rk808" },
 622         { .compatible = "rockchip,rk809" },
 623         { .compatible = "rockchip,rk817" },
 624         { .compatible = "rockchip,rk818" },
 625         { },
 626 };
 627 MODULE_DEVICE_TABLE(of, rk808_of_match);
 628
 629 static int rk808_probe(struct i2c_client *client,
 630                        const struct i2c_device_id *id)
 631 {
 632         struct device_node *np = client->dev.of_node;
 633         struct rk808 *rk808;
 634         const struct rk808_reg_data *pre_init_reg;
 635         const struct mfd_cell *cells;
 636         int nr_pre_init_regs;
 637         int nr_cells;
 638         int msb, lsb;
 639         unsigned char pmic_id_msb, pmic_id_lsb;
 640         int ret;
 641         int i;
 642
 643         rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
 644         if (!rk808)
 645                 return -ENOMEM;
 646
 647         if (of_device_is_compatible(np, "rockchip,rk817") ||
 648             of_device_is_compatible(np, "rockchip,rk809")) {
 649                 pmic_id_msb = RK817_ID_MSB;
 650                 pmic_id_lsb = RK817_ID_LSB;
 651         } else {
 652                 pmic_id_msb = RK808_ID_MSB;
 653                 pmic_id_lsb = RK808_ID_LSB;
 654         }
 655
 656         /* Read chip variant */
 657         msb = i2c_smbus_read_byte_data(client, pmic_id_msb);
 658         if (msb < 0) {
 659                 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
 660                         RK808_ID_MSB);
 661                 return msb;
 662         }
 663
 664         lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
 665         if (lsb < 0) {
 666                 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
 667                         RK808_ID_LSB);
 668                 return lsb;
 669         }
 670
 671         rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
 672         dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
 673
 674         switch (rk808->variant) {
 675         case RK805_ID:
 676                 rk808->regmap_cfg = &rk805_regmap_config;
 677                 rk808->regmap_irq_chip = &rk805_irq_chip;
 678                 pre_init_reg = rk805_pre_init_reg;
 679                 nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
 680                 cells = rk805s;
 681                 nr_cells = ARRAY_SIZE(rk805s);
 682                 break;
 683         case RK808_ID:
 684                 rk808->regmap_cfg = &rk808_regmap_config;
 685                 rk808->regmap_irq_chip = &rk808_irq_chip;
 686                 pre_init_reg = rk808_pre_init_reg;
 687                 nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
 688                 cells = rk808s;
 689                 nr_cells = ARRAY_SIZE(rk808s);
 690                 break;
 691         case RK818_ID:
 692                 rk808->regmap_cfg = &rk818_regmap_config;
 693                 rk808->regmap_irq_chip = &rk818_irq_chip;
 694                 pre_init_reg = rk818_pre_init_reg;
 695                 nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
 696                 cells = rk818s;
 697                 nr_cells = ARRAY_SIZE(rk818s);
 698                 break;
 699         case RK809_ID:
 700         case RK817_ID:
 701                 rk808->regmap_cfg = &rk817_regmap_config;
 702                 rk808->regmap_irq_chip = &rk817_irq_chip;
 703                 pre_init_reg = rk817_pre_init_reg;
 704                 nr_pre_init_regs = ARRAY_SIZE(rk817_pre_init_reg);
 705                 cells = rk817s;
 706                 nr_cells = ARRAY_SIZE(rk817s);
 707                 break;
 708         default:
 709                 dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
 710                         rk808->variant);
 711                 return -EINVAL;
 712         }
 713
 714         rk808->i2c = client;
 715         i2c_set_clientdata(client, rk808);
 716
 717         rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
 718         if (IS_ERR(rk808->regmap)) {
 719                 dev_err(&client->dev, "regmap initialization failed\n");
 720                 return PTR_ERR(rk808->regmap);
 721         }
 722
 723         if (!client->irq) {
 724                 dev_err(&client->dev, "No interrupt support, no core IRQ\n");
 725                 return -EINVAL;
 726         }
 727
 728         ret = regmap_add_irq_chip(rk808->regmap, client->irq,
 729                                   IRQF_ONESHOT, -1,
 730                                   rk808->regmap_irq_chip, &rk808->irq_data);
 731         if (ret) {
 732                 dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
 733                 return ret;
 734         }
 735
 736         for (i = 0; i < nr_pre_init_regs; i++) {
 737                 ret = regmap_update_bits(rk808->regmap,
 738                                         pre_init_reg[i].addr,
 739                                         pre_init_reg[i].mask,
 740                                         pre_init_reg[i].value);
 741                 if (ret) {
 742                         dev_err(&client->dev,
 743                                 "0x%x write err\n",
 744                                 pre_init_reg[i].addr);
 745                         return ret;
 746                 }
 747         }
 748
 749         ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
 750                               cells, nr_cells, NULL, 0,
 751                               regmap_irq_get_domain(rk808->irq_data));
 752         if (ret) {
 753                 dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
 754                 goto err_irq;
 755         }
 756
 757         if (of_property_read_bool(np, "rockchip,system-power-controller")) {
 758                 rk808_i2c_client = client;
 759                 pm_power_off = rk808_pm_power_off;
 760
 761                 switch (rk808->variant) {
 762                 case RK809_ID:
 763                 case RK817_ID:
 764                         ret = register_restart_handler(&rk808_restart_handler);
 765                         if (ret)
 766                                 dev_warn(&client->dev, "failed to register rst handler, %d\n", ret);
 767                         break;
 768                 default:
 769                         dev_dbg(&client->dev, "pmic controlled board reset not supported\n");
 770                         break;
 771                 }
 772         }
 773
 774         return 0;
 775
 776 err_irq:
 777         regmap_del_irq_chip(client->irq, rk808->irq_data);
 778         return ret;
 779 }
 780
 781 static int rk808_remove(struct i2c_client *client)
 782 {
 783         struct rk808 *rk808 = i2c_get_clientdata(client);
 784
 785         regmap_del_irq_chip(client->irq, rk808->irq_data);
 786
 787         /**
 788          * pm_power_off may points to a function from another module.
 789          * Check if the pointer is set by us and only then overwrite it.
 790          */
 791         if (pm_power_off == rk808_pm_power_off)
 792                 pm_power_off = NULL;
 793
 794         unregister_restart_handler(&rk808_restart_handler);
 795
 796         return 0;
 797 }
 798
 799 static int __maybe_unused rk8xx_suspend(struct device *dev)
 800 {
 801         struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
 802         int ret = 0;
 803
 804         switch (rk808->variant) {
 805         case RK805_ID:
 806                 ret = regmap_update_bits(rk808->regmap,
 807                                          RK805_GPIO_IO_POL_REG,
 808                                          SLP_SD_MSK,
 809                                          SLEEP_FUN);
 810                 break;
 811         case RK809_ID:
 812         case RK817_ID:
 813                 ret = regmap_update_bits(rk808->regmap,
 814                                          RK817_SYS_CFG(3),
 815                                          RK817_SLPPIN_FUNC_MSK,
 816                                          SLPPIN_SLP_FUN);
 817                 break;
 818         default:
 819                 break;
 820         }
 821
 822         return ret;
 823 }
 824
 825 static int __maybe_unused rk8xx_resume(struct device *dev)
 826 {
 827         struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
 828         int ret = 0;
 829
 830         switch (rk808->variant) {
 831         case RK809_ID:
 832         case RK817_ID:
 833                 ret = regmap_update_bits(rk808->regmap,
 834                                          RK817_SYS_CFG(3),
 835                                          RK817_SLPPIN_FUNC_MSK,
 836                                          SLPPIN_NULL_FUN);
 837                 break;
 838         default:
 839                 break;
 840         }
 841
 842         return ret;
 843 }
 844 static SIMPLE_DEV_PM_OPS(rk8xx_pm_ops, rk8xx_suspend, rk8xx_resume);
 845
 846 static struct i2c_driver rk808_i2c_driver = {
 847         .driver = {
 848                 .name = "rk808",
 849                 .of_match_table = rk808_of_match,
 850                 .pm = &rk8xx_pm_ops,
 851         },
 852         .probe    = rk808_probe,
 853         .remove   = rk808_remove,
 854         .shutdown = rk8xx_shutdown,
 855 };
 856
 857 module_i2c_driver(rk808_i2c_driver);
 858
 859 MODULE_LICENSE("GPL");
 860 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
 861 MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
 862 MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
 863 MODULE_DESCRIPTION("RK808/RK818 PMIC driver");