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