drivers/mfd/rk808.c

   1 /*
   2  * MFD core driver for Rockchip RK808/RK818
   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  * Copyright (C) 2016 PHYTEC Messtechnik GmbH
  10  *
  11  * Author: Wadim Egorov <w.egorov@phytec.de>
  12  *
  13  * This program is free software; you can redistribute it and/or modify it
  14  * under the terms and conditions of the GNU General Public License,
  15  * version 2, as published by the Free Software Foundation.
  16  *
  17  * This program is distributed in the hope it will be useful, but WITHOUT
  18  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  20  * more details.
  21  */
  22
  23 #include <linux/i2c.h>
  24 #include <linux/interrupt.h>
  25 #include <linux/mfd/rk808.h>
  26 #include <linux/mfd/core.h>
  27 #include <linux/module.h>
  28 #include <linux/of_device.h>
  29 #include <linux/regmap.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 const struct regmap_config rk818_regmap_config = {
  66         .reg_bits = 8,
  67         .val_bits = 8,
  68         .max_register = RK818_USB_CTRL_REG,
  69         .cache_type = REGCACHE_RBTREE,
  70         .volatile_reg = rk808_is_volatile_reg,
  71 };
  72
  73 static const struct regmap_config rk805_regmap_config = {
  74         .reg_bits = 8,
  75         .val_bits = 8,
  76         .max_register = RK805_OFF_SOURCE_REG,
  77         .cache_type = REGCACHE_RBTREE,
  78         .volatile_reg = rk808_is_volatile_reg,
  79 };
  80
  81 static const struct regmap_config rk808_regmap_config = {
  82         .reg_bits = 8,
  83         .val_bits = 8,
  84         .max_register = RK808_IO_POL_REG,
  85         .cache_type = REGCACHE_RBTREE,
  86         .volatile_reg = rk808_is_volatile_reg,
  87 };
  88
  89 static struct resource rtc_resources[] = {
  90         {
  91                 .start  = RK808_IRQ_RTC_ALARM,
  92                 .end    = RK808_IRQ_RTC_ALARM,
  93                 .flags  = IORESOURCE_IRQ,
  94         }
  95 };
  96
  97 static struct resource rk805_key_resources[] = {
  98         {
  99                 .start  = RK805_IRQ_PWRON_FALL,
 100                 .end    = RK805_IRQ_PWRON_FALL,
 101                 .flags  = IORESOURCE_IRQ,
 102         },
 103         {
 104                 .start  = RK805_IRQ_PWRON_RISE,
 105                 .end    = RK805_IRQ_PWRON_RISE,
 106                 .flags  = IORESOURCE_IRQ,
 107         }
 108 };
 109
 110 static const struct mfd_cell rk805s[] = {
 111         { .name = "rk808-clkout", },
 112         { .name = "rk808-regulator", },
 113         { .name = "rk805-pinctrl", },
 114         {
 115                 .name = "rk808-rtc",
 116                 .num_resources = ARRAY_SIZE(rtc_resources),
 117                 .resources = &rtc_resources[0],
 118         },
 119         {       .name = "rk805-pwrkey",
 120                 .num_resources = ARRAY_SIZE(rk805_key_resources),
 121                 .resources = &rk805_key_resources[0],
 122         },
 123 };
 124
 125 static const struct mfd_cell rk808s[] = {
 126         { .name = "rk808-clkout", },
 127         { .name = "rk808-regulator", },
 128         {
 129                 .name = "rk808-rtc",
 130                 .num_resources = ARRAY_SIZE(rtc_resources),
 131                 .resources = rtc_resources,
 132         },
 133 };
 134
 135 static const struct mfd_cell rk818s[] = {
 136         { .name = "rk808-clkout", },
 137         { .name = "rk808-regulator", },
 138         {
 139                 .name = "rk808-rtc",
 140                 .num_resources = ARRAY_SIZE(rtc_resources),
 141                 .resources = rtc_resources,
 142         },
 143 };
 144
 145 static const struct rk808_reg_data rk805_pre_init_reg[] = {
 146         {RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
 147                                  RK805_BUCK1_2_ILMAX_4000MA},
 148         {RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
 149                                  RK805_BUCK1_2_ILMAX_4000MA},
 150         {RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
 151                                  RK805_BUCK3_ILMAX_3000MA},
 152         {RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
 153                                  RK805_BUCK4_ILMAX_3500MA},
 154         {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
 155         {RK805_GPIO_IO_POL_REG, SLP_SD_MSK, SLEEP_FUN},
 156         {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
 157 };
 158
 159 static const struct rk808_reg_data rk808_pre_init_reg[] = {
 160         { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_150MA },
 161         { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_200MA },
 162         { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
 163         { RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK,  BUCK_ILMIN_200MA },
 164         { RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_200MA },
 165         { RK808_DCDC_UV_ACT_REG,  BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
 166         { RK808_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
 167                                                     VB_LO_SEL_3500MV },
 168 };
 169
 170 static const struct rk808_reg_data rk818_pre_init_reg[] = {
 171         /* improve efficiency */
 172         { RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK,  BUCK_ILMIN_250MA },
 173         { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK,  BUCK_ILMIN_250MA },
 174         { RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
 175         { RK818_USB_CTRL_REG,     RK818_USB_ILIM_SEL_MASK,
 176                                                     RK818_USB_ILMIN_2000MA },
 177         /* close charger when usb lower then 3.4V */
 178         { RK818_USB_CTRL_REG,     RK818_USB_CHG_SD_VSEL_MASK,
 179                                                     (0x7 << 4) },
 180         /* no action when vref */
 181         { RK818_H5V_EN_REG,       BIT(1),           RK818_REF_RDY_CTRL },
 182         /* enable HDMI 5V */
 183         { RK818_H5V_EN_REG,       BIT(0),           RK818_H5V_EN },
 184         { RK808_VB_MON_REG,       MASK_ALL,         VB_LO_ACT |
 185                                                     VB_LO_SEL_3500MV },
 186 };
 187
 188 static const struct regmap_irq rk805_irqs[] = {
 189         [RK805_IRQ_PWRON_RISE] = {
 190                 .mask = RK805_IRQ_PWRON_RISE_MSK,
 191                 .reg_offset = 0,
 192         },
 193         [RK805_IRQ_VB_LOW] = {
 194                 .mask = RK805_IRQ_VB_LOW_MSK,
 195                 .reg_offset = 0,
 196         },
 197         [RK805_IRQ_PWRON] = {
 198                 .mask = RK805_IRQ_PWRON_MSK,
 199                 .reg_offset = 0,
 200         },
 201         [RK805_IRQ_PWRON_LP] = {
 202                 .mask = RK805_IRQ_PWRON_LP_MSK,
 203                 .reg_offset = 0,
 204         },
 205         [RK805_IRQ_HOTDIE] = {
 206                 .mask = RK805_IRQ_HOTDIE_MSK,
 207                 .reg_offset = 0,
 208         },
 209         [RK805_IRQ_RTC_ALARM] = {
 210                 .mask = RK805_IRQ_RTC_ALARM_MSK,
 211                 .reg_offset = 0,
 212         },
 213         [RK805_IRQ_RTC_PERIOD] = {
 214                 .mask = RK805_IRQ_RTC_PERIOD_MSK,
 215                 .reg_offset = 0,
 216         },
 217         [RK805_IRQ_PWRON_FALL] = {
 218                 .mask = RK805_IRQ_PWRON_FALL_MSK,
 219                 .reg_offset = 0,
 220         },
 221 };
 222
 223 static const struct regmap_irq rk808_irqs[] = {
 224         /* INT_STS */
 225         [RK808_IRQ_VOUT_LO] = {
 226                 .mask = RK808_IRQ_VOUT_LO_MSK,
 227                 .reg_offset = 0,
 228         },
 229         [RK808_IRQ_VB_LO] = {
 230                 .mask = RK808_IRQ_VB_LO_MSK,
 231                 .reg_offset = 0,
 232         },
 233         [RK808_IRQ_PWRON] = {
 234                 .mask = RK808_IRQ_PWRON_MSK,
 235                 .reg_offset = 0,
 236         },
 237         [RK808_IRQ_PWRON_LP] = {
 238                 .mask = RK808_IRQ_PWRON_LP_MSK,
 239                 .reg_offset = 0,
 240         },
 241         [RK808_IRQ_HOTDIE] = {
 242                 .mask = RK808_IRQ_HOTDIE_MSK,
 243                 .reg_offset = 0,
 244         },
 245         [RK808_IRQ_RTC_ALARM] = {
 246                 .mask = RK808_IRQ_RTC_ALARM_MSK,
 247                 .reg_offset = 0,
 248         },
 249         [RK808_IRQ_RTC_PERIOD] = {
 250                 .mask = RK808_IRQ_RTC_PERIOD_MSK,
 251                 .reg_offset = 0,
 252         },
 253
 254         /* INT_STS2 */
 255         [RK808_IRQ_PLUG_IN_INT] = {
 256                 .mask = RK808_IRQ_PLUG_IN_INT_MSK,
 257                 .reg_offset = 1,
 258         },
 259         [RK808_IRQ_PLUG_OUT_INT] = {
 260                 .mask = RK808_IRQ_PLUG_OUT_INT_MSK,
 261                 .reg_offset = 1,
 262         },
 263 };
 264
 265 static const struct regmap_irq rk818_irqs[] = {
 266         /* INT_STS */
 267         [RK818_IRQ_VOUT_LO] = {
 268                 .mask = RK818_IRQ_VOUT_LO_MSK,
 269                 .reg_offset = 0,
 270         },
 271         [RK818_IRQ_VB_LO] = {
 272                 .mask = RK818_IRQ_VB_LO_MSK,
 273                 .reg_offset = 0,
 274         },
 275         [RK818_IRQ_PWRON] = {
 276                 .mask = RK818_IRQ_PWRON_MSK,
 277                 .reg_offset = 0,
 278         },
 279         [RK818_IRQ_PWRON_LP] = {
 280                 .mask = RK818_IRQ_PWRON_LP_MSK,
 281                 .reg_offset = 0,
 282         },
 283         [RK818_IRQ_HOTDIE] = {
 284                 .mask = RK818_IRQ_HOTDIE_MSK,
 285                 .reg_offset = 0,
 286         },
 287         [RK818_IRQ_RTC_ALARM] = {
 288                 .mask = RK818_IRQ_RTC_ALARM_MSK,
 289                 .reg_offset = 0,
 290         },
 291         [RK818_IRQ_RTC_PERIOD] = {
 292                 .mask = RK818_IRQ_RTC_PERIOD_MSK,
 293                 .reg_offset = 0,
 294         },
 295         [RK818_IRQ_USB_OV] = {
 296                 .mask = RK818_IRQ_USB_OV_MSK,
 297                 .reg_offset = 0,
 298         },
 299
 300         /* INT_STS2 */
 301         [RK818_IRQ_PLUG_IN] = {
 302                 .mask = RK818_IRQ_PLUG_IN_MSK,
 303                 .reg_offset = 1,
 304         },
 305         [RK818_IRQ_PLUG_OUT] = {
 306                 .mask = RK818_IRQ_PLUG_OUT_MSK,
 307                 .reg_offset = 1,
 308         },
 309         [RK818_IRQ_CHG_OK] = {
 310                 .mask = RK818_IRQ_CHG_OK_MSK,
 311                 .reg_offset = 1,
 312         },
 313         [RK818_IRQ_CHG_TE] = {
 314                 .mask = RK818_IRQ_CHG_TE_MSK,
 315                 .reg_offset = 1,
 316         },
 317         [RK818_IRQ_CHG_TS1] = {
 318                 .mask = RK818_IRQ_CHG_TS1_MSK,
 319                 .reg_offset = 1,
 320         },
 321         [RK818_IRQ_TS2] = {
 322                 .mask = RK818_IRQ_TS2_MSK,
 323                 .reg_offset = 1,
 324         },
 325         [RK818_IRQ_CHG_CVTLIM] = {
 326                 .mask = RK818_IRQ_CHG_CVTLIM_MSK,
 327                 .reg_offset = 1,
 328         },
 329         [RK818_IRQ_DISCHG_ILIM] = {
 330                 .mask = RK818_IRQ_DISCHG_ILIM_MSK,
 331                 .reg_offset = 1,
 332         },
 333 };
 334
 335 static struct regmap_irq_chip rk805_irq_chip = {
 336         .name = "rk805",
 337         .irqs = rk805_irqs,
 338         .num_irqs = ARRAY_SIZE(rk805_irqs),
 339         .num_regs = 1,
 340         .status_base = RK805_INT_STS_REG,
 341         .mask_base = RK805_INT_STS_MSK_REG,
 342         .ack_base = RK805_INT_STS_REG,
 343         .init_ack_masked = true,
 344 };
 345
 346 static const struct regmap_irq_chip rk808_irq_chip = {
 347         .name = "rk808",
 348         .irqs = rk808_irqs,
 349         .num_irqs = ARRAY_SIZE(rk808_irqs),
 350         .num_regs = 2,
 351         .irq_reg_stride = 2,
 352         .status_base = RK808_INT_STS_REG1,
 353         .mask_base = RK808_INT_STS_MSK_REG1,
 354         .ack_base = RK808_INT_STS_REG1,
 355         .init_ack_masked = true,
 356 };
 357
 358 static const struct regmap_irq_chip rk818_irq_chip = {
 359         .name = "rk818",
 360         .irqs = rk818_irqs,
 361         .num_irqs = ARRAY_SIZE(rk818_irqs),
 362         .num_regs = 2,
 363         .irq_reg_stride = 2,
 364         .status_base = RK818_INT_STS_REG1,
 365         .mask_base = RK818_INT_STS_MSK_REG1,
 366         .ack_base = RK818_INT_STS_REG1,
 367         .init_ack_masked = true,
 368 };
 369
 370 static struct i2c_client *rk808_i2c_client;
 371
 372 static void rk805_device_shutdown(void)
 373 {
 374         int ret;
 375         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 376
 377         if (!rk808) {
 378                 dev_warn(&rk808_i2c_client->dev,
 379                          "have no rk805, so do nothing here\n");
 380                 return;
 381         }
 382
 383         ret = regmap_update_bits(rk808->regmap,
 384                                  RK805_DEV_CTRL_REG,
 385                                  DEV_OFF, DEV_OFF);
 386         if (ret)
 387                 dev_err(&rk808_i2c_client->dev, "power off error!\n");
 388 }
 389
 390 static void rk808_device_shutdown(void)
 391 {
 392         int ret;
 393         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 394
 395         if (!rk808) {
 396                 dev_warn(&rk808_i2c_client->dev,
 397                          "have no rk808, so do nothing here\n");
 398                 return;
 399         }
 400
 401         ret = regmap_update_bits(rk808->regmap,
 402                                  RK808_DEVCTRL_REG,
 403                                  DEV_OFF_RST, DEV_OFF_RST);
 404         if (ret)
 405                 dev_err(&rk808_i2c_client->dev, "power off error!\n");
 406 }
 407
 408 static void rk818_device_shutdown(void)
 409 {
 410         int ret;
 411         struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
 412
 413         if (!rk808) {
 414                 dev_warn(&rk808_i2c_client->dev,
 415                          "have no rk818, so do nothing here\n");
 416                 return;
 417         }
 418
 419         ret = regmap_update_bits(rk808->regmap,
 420                                  RK818_DEVCTRL_REG,
 421                                  DEV_OFF, DEV_OFF);
 422         if (ret)
 423                 dev_err(&rk808_i2c_client->dev, "power off error!\n");
 424 }
 425
 426 static const struct of_device_id rk808_of_match[] = {
 427         { .compatible = "rockchip,rk805" },
 428         { .compatible = "rockchip,rk808" },
 429         { .compatible = "rockchip,rk818" },
 430         { },
 431 };
 432 MODULE_DEVICE_TABLE(of, rk808_of_match);
 433
 434 static int rk808_probe(struct i2c_client *client,
 435                        const struct i2c_device_id *id)
 436 {
 437         struct device_node *np = client->dev.of_node;
 438         struct rk808 *rk808;
 439         const struct rk808_reg_data *pre_init_reg;
 440         const struct mfd_cell *cells;
 441         void (*pm_pwroff_fn)(void);
 442         int nr_pre_init_regs;
 443         int nr_cells;
 444         int pm_off = 0, msb, lsb;
 445         int ret;
 446         int i;
 447
 448         rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
 449         if (!rk808)
 450                 return -ENOMEM;
 451
 452         /* Read chip variant */
 453         msb = i2c_smbus_read_byte_data(client, RK808_ID_MSB);
 454         if (msb < 0) {
 455                 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
 456                         RK808_ID_MSB);
 457                 return msb;
 458         }
 459
 460         lsb = i2c_smbus_read_byte_data(client, RK808_ID_LSB);
 461         if (lsb < 0) {
 462                 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
 463                         RK808_ID_LSB);
 464                 return lsb;
 465         }
 466
 467         rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
 468         dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
 469
 470         switch (rk808->variant) {
 471         case RK805_ID:
 472                 rk808->regmap_cfg = &rk805_regmap_config;
 473                 rk808->regmap_irq_chip = &rk805_irq_chip;
 474                 pre_init_reg = rk805_pre_init_reg;
 475                 nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
 476                 cells = rk805s;
 477                 nr_cells = ARRAY_SIZE(rk805s);
 478                 pm_pwroff_fn = rk805_device_shutdown;
 479                 break;
 480         case RK808_ID:
 481                 rk808->regmap_cfg = &rk808_regmap_config;
 482                 rk808->regmap_irq_chip = &rk808_irq_chip;
 483                 pre_init_reg = rk808_pre_init_reg;
 484                 nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
 485                 cells = rk808s;
 486                 nr_cells = ARRAY_SIZE(rk808s);
 487                 pm_pwroff_fn = rk808_device_shutdown;
 488                 break;
 489         case RK818_ID:
 490                 rk808->regmap_cfg = &rk818_regmap_config;
 491                 rk808->regmap_irq_chip = &rk818_irq_chip;
 492                 pre_init_reg = rk818_pre_init_reg;
 493                 nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
 494                 cells = rk818s;
 495                 nr_cells = ARRAY_SIZE(rk818s);
 496                 pm_pwroff_fn = rk818_device_shutdown;
 497                 break;
 498         default:
 499                 dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
 500                         rk808->variant);
 501                 return -EINVAL;
 502         }
 503
 504         rk808->i2c = client;
 505         i2c_set_clientdata(client, rk808);
 506
 507         rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
 508         if (IS_ERR(rk808->regmap)) {
 509                 dev_err(&client->dev, "regmap initialization failed\n");
 510                 return PTR_ERR(rk808->regmap);
 511         }
 512
 513         if (!client->irq) {
 514                 dev_err(&client->dev, "No interrupt support, no core IRQ\n");
 515                 return -EINVAL;
 516         }
 517
 518         ret = regmap_add_irq_chip(rk808->regmap, client->irq,
 519                                   IRQF_ONESHOT, -1,
 520                                   rk808->regmap_irq_chip, &rk808->irq_data);
 521         if (ret) {
 522                 dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
 523                 return ret;
 524         }
 525
 526         for (i = 0; i < nr_pre_init_regs; i++) {
 527                 ret = regmap_update_bits(rk808->regmap,
 528                                         pre_init_reg[i].addr,
 529                                         pre_init_reg[i].mask,
 530                                         pre_init_reg[i].value);
 531                 if (ret) {
 532                         dev_err(&client->dev,
 533                                 "0x%x write err\n",
 534                                 pre_init_reg[i].addr);
 535                         return ret;
 536                 }
 537         }
 538
 539         ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
 540                               cells, nr_cells, NULL, 0,
 541                               regmap_irq_get_domain(rk808->irq_data));
 542         if (ret) {
 543                 dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
 544                 goto err_irq;
 545         }
 546
 547         pm_off = of_property_read_bool(np,
 548                                 "rockchip,system-power-controller");
 549         if (pm_off && !pm_power_off) {
 550                 rk808_i2c_client = client;
 551                 pm_power_off = pm_pwroff_fn;
 552         }
 553
 554         return 0;
 555
 556 err_irq:
 557         regmap_del_irq_chip(client->irq, rk808->irq_data);
 558         return ret;
 559 }
 560
 561 static int rk808_remove(struct i2c_client *client)
 562 {
 563         struct rk808 *rk808 = i2c_get_clientdata(client);
 564
 565         regmap_del_irq_chip(client->irq, rk808->irq_data);
 566         pm_power_off = NULL;
 567
 568         return 0;
 569 }
 570
 571 static const struct i2c_device_id rk808_ids[] = {
 572         { "rk805" },
 573         { "rk808" },
 574         { "rk818" },
 575         { },
 576 };
 577 MODULE_DEVICE_TABLE(i2c, rk808_ids);
 578
 579 static struct i2c_driver rk808_i2c_driver = {
 580         .driver = {
 581                 .name = "rk808",
 582                 .of_match_table = rk808_of_match,
 583         },
 584         .probe    = rk808_probe,
 585         .remove   = rk808_remove,
 586         .id_table = rk808_ids,
 587 };
 588
 589 module_i2c_driver(rk808_i2c_driver);
 590
 591 MODULE_LICENSE("GPL");
 592 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
 593 MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
 594 MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
 595 MODULE_DESCRIPTION("RK808/RK818 PMIC driver");