drivers/power/pmic/max8998.c

   1 /*
   2  *  Copyright (C) 2016 Samsung Electronics
   3  *  Jaehoon Chung <jh80.chung@samsung.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <dm.h>
  10 #include <i2c.h>
  11 #include <power/pmic.h>
  12 #include <power/max8998_pmic.h>
  13 #include <errno.h>
  14
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 static int max8998_reg_count(struct udevice *dev)
  18 {
  19         return PMIC_NUM_OF_REGS;
  20 }
  21
  22 static int max8998_write(struct udevice *dev, uint reg, const uint8_t *buff,
  23                 int len)
  24 {
  25         int ret;
  26
  27         ret = dm_i2c_write(dev, reg, buff, len);
  28         if (ret)
  29                 error("write error to device: %p register: %#x!", dev, reg);
  30
  31         return ret;
  32 }
  33
  34 static int max8998_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
  35 {
  36         int ret;
  37
  38         ret = dm_i2c_read(dev, reg, buff, len);
  39         if (ret)
  40                 error("read error from device: %p register: %#x!", dev, reg);
  41
  42         return ret;
  43 }
  44
  45 static struct dm_pmic_ops max8998_ops = {
  46         .reg_count = max8998_reg_count,
  47         .read   = max8998_read,
  48         .write  = max8998_write,
  49 };
  50
  51 static const struct udevice_id max8998_ids[] = {
  52         { .compatible = "maxim,max8998" },
  53         { }
  54 };
  55
  56 U_BOOT_DRIVER(pmic_max8998) = {
  57         .name           = "max8998_pmic",
  58         .id             = UCLASS_PMIC,
  59         .of_match       = max8998_ids,
  60         .ops            = &max8998_ops,
  61 };