drivers/mfd/rk808.c

   1 /*
   2  * MFD core driver for Rockchip RK808
   3  *
   4  * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
   5  *
   6  * Author: Chris Zhong <zyw@rock-chips.com>
   7  * Author: Zhang Qing <zhangqing@rock-chips.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms and conditions of the GNU General Public License,
  11  * version 2, as published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  */
  18
  19 #include <linux/i2c.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/kernel.h>
  22 #include <linux/mfd/rk808.h>
  23 #include <linux/mfd/core.h>
  24 #include <linux/module.h>
  25 #include <linux/of_device.h>
  26 #include <linux/regmap.h>
  27 #include <linux/of_gpio.h>
  28 #include <linux/gpio.h>
  29 #include <linux/delay.h>
  30
  31 struct rk808_reg_data {
  32         int addr;
  33         int mask;
  34         int value;
  35 };
  36
  37 static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
  38 {
  39         /*
  40          * Notes:
  41          * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
  42          *   we don't use that feature.  It's better to cache.
  43          * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
  44          *   bits are cleared in case when we shutoff anyway, but better safe.
  45          */
  46
  47         switch (reg) {
  48         case RK808_SECONDS_REG ... RK808_WEEKS_REG:
  49         case RK808_RTC_STATUS_REG:
  50         case RK808_VB_MON_REG:
  51         case RK808_THERMAL_REG:
  52         case RK808_DCDC_UV_STS_REG:
  53         case RK808_LDO_UV_STS_REG:
  54         case RK808_DCDC_PG_REG:
  55         case RK808_LDO_PG_REG:
  56         case RK808_DEVCTRL_REG:
  57         case RK808_INT_STS_REG1:
  58         case RK808_INT_STS_REG2:
  59                 return true;
  60         }
  61
  62         return false;
  63 }
  64
  65 static int rk808_shutdown(struct regmap *regmap)
  66 {
  67         int ret;
  68
  69         ret = regmap_update_bits(regmap,
  70                                  RK808_DEVCTRL_REG,
  71                                  DEV_OFF, DEV_OFF);
  72         if (ret)
  73                 printk("DEV_OFF error!\n");
  74
  75         mdelay(2);
  76         ret = regmap_update_bits(regmap,
  77                                  RK808_DCDC_EN_REG,
  78                                  BUCK1_EN_MASK | BUCK2_EN_MASK | BUCK3_EN_MASK | BUCK4_EN_MASK, 0xf);
  79         if (ret)
  80                 printk("RK808_DCDC_EN_REG error!\n");
  81         ret = regmap_update_bits(regmap,
  82                                  RK808_LDO_EN_REG,
  83                                  0xff, 0xff);
  84         if (ret)
  85                 printk("RK808_LDO_EN_REG error!\n");
  86
  87         return ret;
  88 }
  89
  90 static int rk816_shutdown(struct regmap *regmap)
  91 {
  92         int ret;
  93
  94         ret = regmap_update_bits(regmap,
  95                                  RK816_DEV_CTRL_REG,
  96                                  DEV_OFF, DEV_OFF);
  97         return ret;
  98 }
  99
 100 static int rk818_shutdown(struct regmap *regmap)
 101 {
 102         int ret;
 103
 104         ret = regmap_update_bits(regmap,
 105                                  RK818_DEVCTRL_REG,
 106                                  DEV_OFF, DEV_OFF);
 107         return ret;
 108 }
 109
 110 static int rk805_shutdown_prepare(struct regmap *regmap)
 111 {
 112         int ret;
 113
 114         /* close rtc int when power off */
 115         regmap_update_bits(regmap,
 116                            RK808_INT_STS_MSK_REG1,
 117                            (0x3 << 5), (0x3 << 5));
 118         regmap_update_bits(regmap,
 119                            RK808_RTC_INT_REG,
 120                            (0x3 << 2), (0x0 << 2));
 121
 122         /* pmic sleep shutdown function */
 123         ret = regmap_update_bits(regmap,
 124                                  RK805_GPIO_IO_POL_REG,
 125                                  SLP_SD_MSK, SHUTDOWN_FUN);
 126         return ret;
 127 }
 128
 129 static bool rk818_is_volatile_reg(struct device *dev, unsigned int reg)
 130 {
 131         /*
 132          * Notes:
 133          * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
 134          *   we don't use that feature.  It's better to cache.
 135          * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
 136          *   bits are cleared in case when we shutoff anyway, but better safe.
 137          */
 138
 139         switch (reg) {
 140         case RK808_SECONDS_REG ... RK808_WEEKS_REG:
 141         case RK808_RTC_STATUS_REG:
 142         case RK808_VB_MON_REG:
 143         case RK808_THERMAL_REG:
 144         case RK808_DCDC_EN_REG:
 145         case RK808_DCDC_UV_STS_REG:
 146         case RK808_LDO_UV_STS_REG:
 147         case RK808_DCDC_PG_REG:
 148         case RK808_LDO_PG_REG:
 149         case RK808_DEVCTRL_REG:
 150         case RK808_INT_STS_REG1:
 151         case RK808_INT_STS_REG2:
 152         case RK808_INT_STS_MSK_REG1:
 153         case RK808_INT_STS_MSK_REG2:
 154         case RK818_SUP_STS_REG ... RK818_SAVE_DATA19:
 155                 return true;
 156         }
 157
 158         return false;
 159 }
 160
 161 static const struct regmap_config rk808_regmap_config = {
 162         .reg_bits = 8,
 163         .val_bits = 8,
 164         .max_register = RK808_IO_POL_REG,
 165         .cache_type = REGCACHE_RBTREE,
 166         .volatile_reg = rk808_is_volatile_reg,
 167 };
 168
 169 static const struct regmap_config rk805_regmap_config = {
 170         .reg_bits = 8,
 171         .val_bits = 8,
 172         .max_register = RK805_OFF_SOURCE_REG,
 173         .cache_type = REGCACHE_RBTREE,
 174         .volatile_reg = rk808_is_volatile_reg,
 175 };
 176
 177 static const struct regmap_config rk816_regmap_config = {
 178         .reg_bits = 8,
 179         .val_bits = 8,
 180         .max_register = RK816_DATA18_REG,
 181         .cache_type = REGCACHE_RBTREE,
 182         .volatile_reg = rk818_is_volatile_reg,
 183 };
 184
 185 static const struct regmap_config rk818_regmap_config = {
 186         .reg_bits = 8,
 187         .val_bits = 8,
 188         .max_register = RK818_SAVE_DATA19,
 189         .cache_type = REGCACHE_RBTREE,
 190         .volatile_reg = rk818_is_volatile_reg,
 191 };
 192
 193 static struct resource rtc_resources[] = {
 194         {
 195                 .start  = RK808_IRQ_RTC_ALARM,
 196                 .end    = RK808_IRQ_RTC_ALARM,
 197                 .flags  = IORESOURCE_IRQ,
 198         }
 199 };
 200
 201 static struct resource pwrkey_resources[] = {
 202         {
 203                 .start  = RK805_IRQ_PWRON_RISE,
 204                 .end    = RK805_IRQ_PWRON_RISE,
 205                 .flags  = IORESOURCE_IRQ,
 206         },
 207         {
 208                 .start  = RK805_IRQ_PWRON_FALL,
 209                 .end    = RK805_IRQ_PWRON_FALL,
 210                 .flags  = IORESOURCE_IRQ,
 211         },
 212 };
 213
 214 static struct resource rk816_pwrkey_resources[] = {
 215         {
 216                 .start  = RK816_IRQ_PWRON_RISE,
 217                 .end    = RK816_IRQ_PWRON_RISE,
 218                 .flags  = IORESOURCE_IRQ,
 219         },
 220         {
 221                 .start  = RK816_IRQ_PWRON_FALL,
 222                 .end    = RK816_IRQ_PWRON_FALL,
 223                 .flags  = IORESOURCE_IRQ,
 224         },
 225 };
 226
 227 static const struct mfd_cell rk808s[] = {
 228         { .name = "rk808-clkout", },
 229         { .name = "rk808-regulator", },
 230         {
 231                 .name = "rk808-rtc",
 232                 .num_resources = ARRAY_SIZE(rtc_resources),
 233                 .resources = &rtc_resources[0],
 234         },
 235 };
 236
 237 static const struct rk808_reg_data rk808_pre_init_reg[] = {
 238         { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_150MA },
 239         { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_200MA },
 240         { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
 241         { RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK,  BUCK_ILMIN_200MA },
 242         { RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_200MA },
 243         { RK808_DCDC_UV_ACT_REG,  BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
 244         { RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
 245         { RK808_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
 246                                                     VB_LO_SEL_3500MV },
 247 };
 248
 249 static const struct regmap_irq rk808_irqs[] = {
 250         /* INT_STS */
 251         [RK808_IRQ_VOUT_LO] = {
 252                 .mask = RK808_IRQ_VOUT_LO_MSK,
 253                 .reg_offset = 0,
 254         },
 255         [RK808_IRQ_VB_LO] = {
 256                 .mask = RK808_IRQ_VB_LO_MSK,
 257                 .reg_offset = 0,
 258         },
 259         [RK808_IRQ_PWRON] = {
 260                 .mask = RK808_IRQ_PWRON_MSK,
 261                 .reg_offset = 0,
 262         },
 263         [RK808_IRQ_PWRON_LP] = {
 264                 .mask = RK808_IRQ_PWRON_LP_MSK,
 265                 .reg_offset = 0,
 266         },
 267         [RK808_IRQ_HOTDIE] = {
 268                 .mask = RK808_IRQ_HOTDIE_MSK,
 269                 .reg_offset = 0,
 270         },
 271         [RK808_IRQ_RTC_ALARM] = {
 272                 .mask = RK808_IRQ_RTC_ALARM_MSK,
 273                 .reg_offset = 0,
 274         },
 275         [RK808_IRQ_RTC_PERIOD] = {
 276                 .mask = RK808_IRQ_RTC_PERIOD_MSK,
 277                 .reg_offset = 0,
 278         },
 279
 280         /* INT_STS2 */
 281         [RK808_IRQ_PLUG_IN_INT] = {
 282                 .mask = RK808_IRQ_PLUG_IN_INT_MSK,
 283                 .reg_offset = 1,
 284         },
 285         [RK808_IRQ_PLUG_OUT_INT] = {
 286                 .mask = RK808_IRQ_PLUG_OUT_INT_MSK,
 287                 .reg_offset = 1,
 288         },
 289 };
 290
 291 static struct regmap_irq_chip rk808_irq_chip = {
 292         .name = "rk808",
 293         .irqs = rk808_irqs,
 294         .num_irqs = ARRAY_SIZE(rk808_irqs),
 295         .num_regs = 2,
 296         .irq_reg_stride = 2,
 297         .status_base = RK808_INT_STS_REG1,
 298         .mask_base = RK808_INT_STS_MSK_REG1,
 299         .ack_base = RK808_INT_STS_REG1,
 300         .init_ack_masked = true,
 301 };
 302
 303 static const struct mfd_cell rk816s[] = {
 304         { .name = "rk808-clkout", },
 305         { .name = "rk808-regulator", },
 306         { .name = "rk8xx-gpio", },
 307         {
 308                 .name = "rk8xx-pwrkey",
 309                 .num_resources = ARRAY_SIZE(rk816_pwrkey_resources),
 310                 .resources = &rk816_pwrkey_resources[0],
 311         },
 312         {
 313                 .name = "rk808-rtc",
 314                 .num_resources = ARRAY_SIZE(rtc_resources),
 315                 .resources = &rtc_resources[0],
 316         },
 317 };
 318
 319 static const struct rk808_reg_data rk816_pre_init_reg[] = {
 320         /* buck4 Max ILMIT*/
 321         {RK816_BUCK4_CONFIG_REG, BUCK4_MAX_ILIMIT, REG_WRITE_MSK},
 322         /* hotdie temperature: 105c*/
 323         {RK816_THERMAL_REG, TEMP105C, REG_WRITE_MSK},
 324         /* set buck 12.5mv/us */
 325         {RK816_BUCK1_CONFIG_REG, BUCK_RATE_12_5MV_US, BUCK_RATE_MSK},
 326         {RK816_BUCK2_CONFIG_REG, BUCK_RATE_12_5MV_US, BUCK_RATE_MSK},
 327         /* enable RTC_PERIOD & RTC_ALARM int */
 328         {RK816_INT_STS_MSK_REG2, RTC_PERIOD_ALARM_INT_EN, REG_WRITE_MSK},
 329         /* set bat 3.0 low and act shutdown */
 330         {RK816_VB_MON_REG, RK816_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN,
 331         VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK},
 332         /* enable PWRON rising/faling int */
 333         {RK816_INT_STS_MSK_REG1, RK816_PWRON_FALL_RISE_INT_EN, REG_WRITE_MSK},
 334         /* enable PLUG IN/OUT int */
 335         {RK816_INT_STS_MSK_REG3, PLUGIN_OUT_INT_EN, REG_WRITE_MSK},
 336         /* clear int flags */
 337         {RK816_INT_STS_REG1, ALL_INT_FLAGS_ST, REG_WRITE_MSK},
 338         {RK816_INT_STS_REG2, ALL_INT_FLAGS_ST, REG_WRITE_MSK},
 339         {RK816_INT_STS_REG3, ALL_INT_FLAGS_ST, REG_WRITE_MSK},
 340         {RK816_DCDC_EN_REG2, BOOST_DISABLE, BOOST_EN_MASK},
 341 };
 342
 343 static const struct regmap_irq rk816_irqs[] = {
 344         /* INT_STS */
 345         [RK816_IRQ_PWRON_FALL] = {
 346                 .mask = RK816_IRQ_PWRON_FALL_MSK,
 347                 .reg_offset = 0,
 348         },
 349         [RK816_IRQ_PWRON_RISE] = {
 350                 .mask = RK816_IRQ_PWRON_RISE_MSK,
 351                 .reg_offset = 0,
 352         },
 353         [RK816_IRQ_VB_LOW] = {
 354                 .mask = RK816_IRQ_VB_LOW_MSK,
 355                 .reg_offset = 1,
 356         },
 357         [RK816_IRQ_PWRON] = {
 358                 .mask = RK816_IRQ_PWRON_MSK,
 359                 .reg_offset = 1,
 360         },
 361         [RK816_IRQ_PWRON_LP] = {
 362                 .mask = RK816_IRQ_PWRON_LP_MSK,
 363                 .reg_offset = 1,
 364         },
 365         [RK816_IRQ_HOTDIE] = {
 366                 .mask = RK816_IRQ_HOTDIE_MSK,
 367                 .reg_offset = 1,
 368         },
 369         [RK816_IRQ_RTC_ALARM] = {
 370                 .mask = RK816_IRQ_RTC_ALARM_MSK,
 371                 .reg_offset = 1,
 372         },
 373         [RK816_IRQ_RTC_PERIOD] = {
 374                 .mask = RK816_IRQ_RTC_PERIOD_MSK,
 375                 .reg_offset = 1,
 376         },
 377         [RK816_IRQ_USB_OV] = {
 378                 .mask = RK816_IRQ_USB_OV_MSK,
 379                 .reg_offset = 1,
 380         },
 381 };
 382
 383 static struct regmap_irq_chip rk816_irq_chip = {
 384         .name = "rk816",
 385         .irqs = rk816_irqs,
 386         .num_irqs = ARRAY_SIZE(rk816_irqs),
 387         .num_regs = 2,
 388         .irq_reg_stride = 3,
 389         .status_base = RK816_INT_STS_REG1,
 390         .mask_base = RK816_INT_STS_MSK_REG1,
 391         .ack_base = RK816_INT_STS_REG1,
 392         .init_ack_masked = true,
 393 };
 394
 395 static const struct mfd_cell rk818s[] = {
 396         { .name = "rk808-clkout", },
 397         { .name = "rk808-regulator", },
 398         { .name = "rk818-battery", .of_compatible = "rk818-battery", },
 399         { .name = "rk818-charger", },
 400         {
 401                 .name = "rk808-rtc",
 402                 .num_resources = ARRAY_SIZE(rtc_resources),
 403                 .resources = &rtc_resources[0],
 404         },
 405 };
 406
 407 static const struct rk808_reg_data rk818_pre_init_reg[] = {
 408         { RK818_H5V_EN_REG, REF_RDY_CTRL_ENABLE | H5V_EN_MASK,
 409                                         REF_RDY_CTRL_ENABLE | H5V_EN_ENABLE },
 410         { RK818_DCDC_EN_REG, BOOST_EN_MASK | SWITCH_EN_MASK,
 411                                         BOOST_EN_ENABLE | SWITCH_EN_ENABLE },
 412         { RK818_SLEEP_SET_OFF_REG1, OTG_SLP_SET_MASK, OTG_SLP_SET_OFF },
 413         { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_250MA },
 414         { RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
 415 };
 416
 417 static const struct regmap_irq rk818_irqs[] = {
 418         /* INT_STS */
 419         [RK818_IRQ_VOUT_LO] = {
 420                 .mask = VOUT_LO_MASK,
 421                 .reg_offset = 0,
 422         },
 423         [RK818_IRQ_VB_LO] = {
 424                 .mask = VB_LO_MASK,
 425                 .reg_offset = 0,
 426         },
 427         [RK818_IRQ_PWRON] = {
 428                 .mask = PWRON_MASK,
 429                 .reg_offset = 0,
 430         },
 431         [RK818_IRQ_PWRON_LP] = {
 432                 .mask = PWRON_LP_MASK,
 433                 .reg_offset = 0,
 434         },
 435         [RK818_IRQ_HOTDIE] = {
 436                 .mask = HOTDIE_MASK,
 437                 .reg_offset = 0,
 438         },
 439         [RK818_IRQ_RTC_ALARM] = {
 440                 .mask = RTC_ALARM_MASK,
 441                 .reg_offset = 0,
 442         },
 443         [RK818_IRQ_RTC_PERIOD] = {
 444                 .mask = RTC_PERIOD_MASK,
 445                 .reg_offset = 0,
 446         },
 447         [RK818_IRQ_USB_OV] = {
 448                 .mask = USB_OV_MASK,
 449                 .reg_offset = 0,
 450         },
 451         /* INT_STS2 */
 452         [RK818_IRQ_PLUG_IN] = {
 453                 .mask = PLUG_IN_MASK,
 454                 .reg_offset = 1,
 455         },
 456         [RK818_IRQ_PLUG_OUT] = {
 457                 .mask = PLUG_OUT_MASK,
 458                 .reg_offset = 1,
 459         },
 460         [RK818_IRQ_CHG_OK] = {
 461                 .mask = CHGOK_MASK,
 462                 .reg_offset = 1,
 463         },
 464         [RK818_IRQ_CHG_TE] = {
 465                 .mask = CHGTE_MASK,
 466                 .reg_offset = 1,
 467         },
 468         [RK818_IRQ_CHG_TS1] = {
 469                 .mask = CHGTS1_MASK,
 470                 .reg_offset = 1,
 471         },
 472         [RK818_IRQ_TS2] = {
 473                 .mask = TS2_MASK,
 474                 .reg_offset = 1,
 475         },
 476         [RK818_IRQ_CHG_CVTLIM] = {
 477                 .mask = CHG_CVTLIM_MASK,
 478                 .reg_offset = 1,
 479         },
 480         [RK818_IRQ_DISCHG_ILIM] = {
 481                 .mask = DISCHG_ILIM_MASK,
 482                 .reg_offset = 1,
 483         },
 484 };
 485
 486 static struct regmap_irq_chip rk818_irq_chip = {
 487         .name = "rk818",
 488         .irqs = rk818_irqs,
 489         .num_irqs = ARRAY_SIZE(rk818_irqs),
 490         .num_regs = 2,
 491         .irq_reg_stride = 2,
 492         .status_base = RK808_INT_STS_REG1,
 493         .mask_base = RK808_INT_STS_MSK_REG1,
 494         .ack_base = RK808_INT_STS_REG1,
 495         .init_ack_masked = true,
 496 };
 497
 498 static const struct regmap_irq rk805_irqs[] = {
 499         [RK805_IRQ_PWRON_RISE] = {
 500                 .mask = RK805_IRQ_PWRON_RISE_MSK,
 501                 .reg_offset = 0,
 502         },
 503         [RK805_IRQ_VB_LOW] = {
 504                 .mask = RK805_IRQ_VB_LOW_MSK,
 505                 .reg_offset = 0,
 506         },
 507         [RK805_IRQ_PWRON] = {
 508                 .mask = RK805_IRQ_PWRON_MSK,
 509                 .reg_offset = 0,
 510         },
 511         [RK805_IRQ_PWRON_LP] = {
 512                 .mask = RK805_IRQ_PWRON_LP_MSK,
 513                 .reg_offset = 0,
 514         },
 515         [RK805_IRQ_HOTDIE] = {
 516                 .mask = RK805_IRQ_HOTDIE_MSK,
 517                 .reg_offset = 0,
 518         },
 519         [RK805_IRQ_RTC_ALARM] = {
 520                 .mask = RK805_IRQ_RTC_ALARM_MSK,
 521                 .reg_offset = 0,
 522         },
 523         [RK805_IRQ_RTC_PERIOD] = {
 524                 .mask = RK805_IRQ_RTC_PERIOD_MSK,
 525                 .reg_offset = 0,
 526         },
 527         [RK805_IRQ_PWRON_FALL] = {
 528                 .mask = RK805_IRQ_PWRON_FALL_MSK,
 529                 .reg_offset = 0,
 530         },
 531 };
 532
 533 static struct regmap_irq_chip rk805_irq_chip = {
 534         .name = "rk805",
 535         .irqs = rk805_irqs,
 536         .num_irqs = ARRAY_SIZE(rk805_irqs),
 537         .num_regs = 1,
 538         .status_base = RK805_INT_STS_REG,
 539         .mask_base = RK805_INT_STS_MSK_REG,
 540         .ack_base = RK805_INT_STS_REG,
 541         .init_ack_masked = true,
 542 };
 543
 544 static const struct mfd_cell rk805s[] = {
 545         { .name = "rk808-clkout", },
 546         { .name = "rk818-regulator", },
 547         { .name = "rk8xx-gpio", },
 548         {
 549                 .name = "rk8xx-pwrkey",
 550                 .num_resources = ARRAY_SIZE(pwrkey_resources),
 551                 .resources = &pwrkey_resources[0],
 552         },
 553         {
 554                 .name = "rk808-rtc",
 555                 .num_resources = ARRAY_SIZE(rtc_resources),
 556                 .resources = &rtc_resources[0],
 557         },
 558 };
 559
 560 static const struct rk808_reg_data rk805_pre_init_reg[] = {
 561         {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
 562         {RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN},
 563         {RK808_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
 564         {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
 565 };
 566
 567 static int (*pm_shutdown)(struct regmap *regmap);
 568 static int (*pm_shutdown_prepare)(struct regmap *regmap);
 569 static struct i2c_client *rk808_i2c_client;
 570
 571 static void rk808_device_shutdown_prepare(void)
 572 {
 573         int ret;
 574         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 575
 576     if (gpio_is_valid(rk808->stby_gpio)) {
 577         printk("rk808->stby_gpio(%d)=low\n", rk808->stby_gpio);
 578         gpio_direction_output(rk808->stby_gpio, 0);
 579     }
 580     if (gpio_is_valid(rk808->hold_gpio)) {
 581         printk("rk808->hold_gpio(%d)=low\n", rk808->hold_gpio);
 582         gpio_direction_output(rk808->hold_gpio, 0);
 583         mdelay(200);
 584     }
 585         if (!rk808) {
 586                 dev_warn(&rk808_i2c_client->dev,
 587                          "have no rk808, so do nothing here\n");
 588                 return;
 589         }
 590
 591         if (pm_shutdown_prepare) {
 592                 ret = pm_shutdown_prepare(rk808->regmap);
 593                 if (ret)
 594                         dev_err(&rk808_i2c_client->dev,
 595                                 "power off prepare error!\n");
 596         }
 597 }
 598
 599 static void rk808_device_shutdown(void)
 600 {
 601         int ret;
 602         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 603
 604         if (!rk808) {
 605                 dev_warn(&rk808_i2c_client->dev,
 606                          "have no rk808, so do nothing here\n");
 607                 return;
 608         }
 609
 610         /* close rtc int when power off */
 611 #if 0
 612         regmap_update_bits(rk808->regmap,
 613                            RK808_INT_STS_MSK_REG1,
 614                            (0x3 << 5), (0x3 << 5));
 615         regmap_update_bits(rk808->regmap,
 616                            RK808_RTC_INT_REG,
 617                            (0x3 << 2), (0x0 << 2));
 618 #endif
 619
 620         if (gpio_is_valid(rk808->stby_gpio)) {
 621             printk("rk808->stby_gpio(%d)=low\n", rk808->stby_gpio);
 622             gpio_direction_output(rk808->stby_gpio, 0);
 623         }
 624         if (gpio_is_valid(rk808->hold_gpio)) {
 625             printk("rk808->hold_gpio(%d)=low\n", rk808->hold_gpio);
 626             gpio_direction_output(rk808->hold_gpio, 0);
 627             mdelay(200);
 628         }
 629         if (pm_shutdown) {
 630                 ret = pm_shutdown(rk808->regmap);
 631                 if (ret)
 632                         dev_err(&rk808_i2c_client->dev, "power off error!\n");
 633         }
 634     printk("%s-%d: pm_shutdown\n", __FUNCTION__, __LINE__);
 635 }
 636
 637 static ssize_t rk8xx_dbg_store(struct device *dev,
 638                                struct device_attribute *attr,
 639                                const char *buf, size_t count)
 640 {
 641         int ret;
 642         char cmd;
 643         u32 input[2], addr, data;
 644         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 645
 646         ret = sscanf(buf, "%c ", &cmd);
 647         switch (cmd) {
 648         case 'w':
 649                 ret = sscanf(buf, "%c %x %x ", &cmd, &input[0], &input[1]);
 650                 if (ret != 3) {
 651                         pr_err("erro! cmd format: echo w [addr] [value]\n");
 652                         goto out;
 653                 };
 654                 addr = input[0] & 0xff;
 655                 data = input[1] & 0xff;
 656                 pr_info("cmd : %c %x %x\n\n", cmd, input[0], input[1]);
 657                 regmap_write(rk808->regmap, addr, data);
 658                 regmap_read(rk808->regmap, addr, &data);
 659                 pr_info("new: %x %x\n", addr, data);
 660                 break;
 661         case 'r':
 662                 ret = sscanf(buf, "%c %x ", &cmd, &input[0]);
 663                 if (ret != 2) {
 664                         pr_err("erro! cmd format: echo r [addr]\n");
 665                         goto out;
 666                 };
 667                 pr_info("cmd : %c %x\n\n", cmd, input[0]);
 668                 addr = input[0] & 0xff;
 669                 regmap_read(rk808->regmap, addr, &data);
 670                 pr_info("%x %x\n", input[0], data);
 671                 break;
 672         default:
 673                 pr_err("Unknown command\n");
 674                 break;
 675         }
 676
 677 out:
 678         return count;
 679 }
 680
 681 static struct kobject *rk8xx_kobj;
 682 static struct device_attribute rk8xx_attrs =
 683                 __ATTR(rk8xx_dbg, 0200, NULL, rk8xx_dbg_store);
 684
 685 static const struct of_device_id rk808_of_match[] = {
 686         { .compatible = "rockchip,rk805" },
 687         { .compatible = "rockchip,rk808" },
 688         { .compatible = "rockchip,rk816" },
 689         { .compatible = "rockchip,rk818" },
 690         { },
 691 };
 692
 693 MODULE_DEVICE_TABLE(of, rk808_of_match);
 694
 695 static int rk808_probe(struct i2c_client *client,
 696                        const struct i2c_device_id *id)
 697 {
 698         struct device_node *np = client->dev.of_node;
 699         struct rk808 *rk808;
 700         int (*pm_shutdown_fn)(struct regmap *regmap) = NULL;
 701         int (*pm_shutdown_prepare_fn)(struct regmap *regmap) = NULL;
 702         const struct rk808_reg_data *pre_init_reg;
 703         const struct regmap_config *regmap_config;
 704         const struct regmap_irq_chip *irq_chip;
 705         const struct mfd_cell *cell;
 706         u8 on_source = 0, off_source = 0;
 707         int msb, lsb, reg_num, cell_num;
 708         int ret, i, pm_off = 0;
 709         unsigned int on, off;
 710
 711         if (!client->irq) {
 712                 dev_err(&client->dev, "No interrupt support, no core IRQ\n");
 713                 return -EINVAL;
 714         }
 715
 716         rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
 717         if (!rk808)
 718                 return -ENOMEM;
 719
 720         /* read Chip variant */
 721         msb = i2c_smbus_read_byte_data(client, RK808_ID_MSB);
 722         if (msb < 0) {
 723                 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
 724                         RK808_ID_MSB);
 725                 return msb;
 726         }
 727
 728         lsb = i2c_smbus_read_byte_data(client, RK808_ID_LSB);
 729         if (lsb < 0) {
 730                 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
 731                         RK808_ID_LSB);
 732                 return lsb;
 733         }
 734
 735         rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
 736         dev_info(&client->dev, "Pmic Chip id: 0x%lx\n", rk808->variant);
 737
 738         /* set Chip platform init data*/
 739         switch (rk808->variant) {
 740         case RK818_ID:
 741                 cell = rk818s;
 742                 cell_num = ARRAY_SIZE(rk818s);
 743                 pre_init_reg = rk818_pre_init_reg;
 744                 reg_num = ARRAY_SIZE(rk818_pre_init_reg);
 745                 regmap_config = &rk818_regmap_config;
 746                 irq_chip = &rk818_irq_chip;
 747                 pm_shutdown_fn = rk818_shutdown;
 748                 on_source = RK818_ON_SOURCE_REG;
 749                 off_source = RK818_OFF_SOURCE_REG;
 750                 break;
 751         case RK816_ID:
 752                 cell = rk816s;
 753                 cell_num = ARRAY_SIZE(rk816s);
 754                 pre_init_reg = rk816_pre_init_reg;
 755                 reg_num = ARRAY_SIZE(rk816_pre_init_reg);
 756                 regmap_config = &rk816_regmap_config;
 757                 irq_chip = &rk816_irq_chip;
 758                 pm_shutdown_fn = rk816_shutdown;
 759                 on_source = RK816_ON_SOURCE_REG;
 760                 off_source = RK816_OFF_SOURCE_REG;
 761                 break;
 762         case RK808_ID:
 763                 cell = rk808s;
 764                 cell_num = ARRAY_SIZE(rk808s);
 765                 pre_init_reg = rk808_pre_init_reg;
 766                 reg_num = ARRAY_SIZE(rk808_pre_init_reg);
 767                 regmap_config = &rk808_regmap_config;
 768                 irq_chip = &rk808_irq_chip;
 769                 pm_shutdown_fn = rk808_shutdown;
 770                 break;
 771         case RK805_ID:
 772                 cell = rk805s;
 773                 cell_num = ARRAY_SIZE(rk805s);
 774                 pre_init_reg = rk805_pre_init_reg;
 775                 reg_num = ARRAY_SIZE(rk805_pre_init_reg);
 776                 regmap_config = &rk805_regmap_config;
 777                 irq_chip = &rk805_irq_chip;
 778                 pm_shutdown_prepare_fn = rk805_shutdown_prepare;
 779                 on_source = RK805_ON_SOURCE_REG;
 780                 off_source = RK805_OFF_SOURCE_REG;
 781                 break;
 782         default:
 783                 dev_err(&client->dev, "unsupported RK8XX ID 0x%lx\n",
 784                         rk808->variant);
 785                 return -EINVAL;
 786         }
 787
 788         rk808->regmap = devm_regmap_init_i2c(client, regmap_config);
 789         if (IS_ERR(rk808->regmap)) {
 790                 dev_err(&client->dev, "regmap initialization failed\n");
 791                 return PTR_ERR(rk808->regmap);
 792         }
 793
 794         /* on & off source */
 795         if (on_source && off_source) {
 796                 ret = regmap_read(rk808->regmap, on_source, &on);
 797                 if (ret) {
 798                         dev_err(&client->dev, "read 0x%x failed\n", on_source);
 799                         return ret;
 800                 }
 801
 802                 ret = regmap_read(rk808->regmap, off_source, &off);
 803                 if (ret) {
 804                         dev_err(&client->dev, "read 0x%x failed\n", off_source);
 805                         return ret;
 806                 }
 807
 808                 dev_info(&client->dev, "source: on=0x%02x, off=0x%02x\n",
 809                          on, off);
 810         }
 811
 812         for (i = 0; i < reg_num; i++) {
 813                 ret = regmap_update_bits(rk808->regmap,
 814                                          pre_init_reg[i].addr,
 815                                          pre_init_reg[i].mask,
 816                                          pre_init_reg[i].value);
 817                 if (ret) {
 818                         dev_err(&client->dev,
 819                                 "0x%x write err\n",
 820                                 pre_init_reg[i].addr);
 821                         return ret;
 822                 }
 823         }
 824
 825         ret = regmap_add_irq_chip(rk808->regmap, client->irq,
 826                                   IRQF_ONESHOT, -1,
 827                                   irq_chip, &rk808->irq_data);
 828         if (ret) {
 829                 dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
 830                 return ret;
 831         }
 832
 833         rk808->i2c = client;
 834         i2c_set_clientdata(client, rk808);
 835
 836         ret = mfd_add_devices(&client->dev, -1,
 837                               cell, cell_num,
 838                               NULL, 0, regmap_irq_get_domain(rk808->irq_data));
 839         if (ret) {
 840                 dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
 841                 goto err_irq;
 842         }
 843
 844         pm_off = of_property_read_bool(np,
 845                                 "rockchip,system-power-controller");
 846         if (pm_off) {
 847                 rk808_i2c_client = client;
 848                 if (pm_shutdown_prepare_fn) {
 849                         pm_shutdown_prepare = pm_shutdown_prepare_fn;
 850                         pm_power_off_prepare = rk808_device_shutdown_prepare;
 851                 }
 852                 if (pm_shutdown_fn) {
 853                         pm_shutdown = pm_shutdown_fn;
 854                         pm_power_off = rk808_device_shutdown;
 855                 }
 856         }
 857
 858         rk8xx_kobj = kobject_create_and_add("rk8xx", NULL);
 859         if (rk8xx_kobj) {
 860                 ret = sysfs_create_file(rk8xx_kobj, &rk8xx_attrs.attr);
 861                 if (ret)
 862                         dev_err(&client->dev, "create rk8xx sysfs error\n");
 863         }
 864         //pmic,hold-gpio
 865         rk808->hold_gpio = of_get_named_gpio(np, "pmic,hold-gpio", 0);
 866         if (gpio_is_valid(rk808->hold_gpio)) {
 867                 ret = devm_gpio_request(&client->dev, rk808->hold_gpio, "pmic-hold-gpio");
 868                 if(ret < 0){
 869                         dev_err(&client->dev, "pmic-hold-gpio request ERROR\n");
 870                         goto err_irq;
 871                 }
 872         dev_dbg(&client->dev, "hold_gpio(%d)=high\n", rk808->hold_gpio);
 873         gpio_direction_output(rk808->hold_gpio, 1);
 874         }
 875     else {
 876                 dev_err(&client->dev, "Can not read property pmic,hold-gpio\n");
 877                 //goto err_irq;
 878     }
 879
 880         //pmic,stby-gpio
 881         rk808->stby_gpio = of_get_named_gpio(np, "pmic,stby-gpio", 0);
 882         if (gpio_is_valid(rk808->stby_gpio)) {
 883                 ret = devm_gpio_request(&client->dev, rk808->stby_gpio, "pmic-stby-gpio");
 884                 if(ret < 0){
 885                         dev_err(&client->dev, "devm_gpio_request pmic-stby-gpio request ERROR\n");
 886                         goto err_irq;
 887                 }
 888         dev_dbg(&client->dev, "stby_gpio(%d)=low\n", rk808->stby_gpio);
 889         gpio_direction_output(rk808->stby_gpio, 1);
 890         } else {
 891                 dev_err(&client->dev, "Can not read property pmic,stby-gpio\n");
 892                 //goto err_irq;
 893         }
 894
 895         return 0;
 896
 897 err_irq:
 898         regmap_del_irq_chip(client->irq, rk808->irq_data);
 899         return ret;
 900 }
 901
 902 static int rk808_remove(struct i2c_client *client)
 903 {
 904         struct rk808 *rk808 = i2c_get_clientdata(client);
 905
 906         regmap_del_irq_chip(client->irq, rk808->irq_data);
 907         mfd_remove_devices(&client->dev);
 908         if (pm_power_off == rk808_device_shutdown)
 909                 pm_power_off = NULL;
 910         if (pm_power_off_prepare == rk808_device_shutdown_prepare)
 911                 pm_power_off_prepare = NULL;
 912
 913         return 0;
 914 }
 915
 916 static const struct i2c_device_id rk808_ids[] = {
 917         { "rk805" },
 918         { "rk808" },
 919         { "rk816" },
 920         { "rk818" },
 921         { },
 922 };
 923 MODULE_DEVICE_TABLE(i2c, rk808_ids);
 924
 925 static struct i2c_driver rk808_i2c_driver = {
 926         .driver = {
 927                 .name = "rk808",
 928                 .of_match_table = rk808_of_match,
 929         },
 930         .probe    = rk808_probe,
 931         .remove   = rk808_remove,
 932         .id_table = rk808_ids,
 933 };
 934
 935 module_i2c_driver(rk808_i2c_driver);
 936
 937 MODULE_LICENSE("GPL");
 938 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
 939 MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
 940 MODULE_AUTHOR("Chen jianhong <chenjh@rock-chips.com>");
 941 MODULE_DESCRIPTION("RK808 PMIC driver");