LXR uboot/drivers/power/pmic/max8997.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 *  Copyright (C) 2016 Samsung Electronics
   4 *  Jaehoon Chung <jh80.chung@samsung.com>
   5 */
   6
   7#include <common.h>
   8#include <dm.h>
   9#include <i2c.h>
  10#include <power/pmic.h>
  11#include <power/max8997_pmic.h>
  12#include <errno.h>
  13
  14static int max8997_reg_count(struct udevice *dev)
  15{
  16        return PMIC_NUM_OF_REGS;
  17}
  18
  19static int max8997_write(struct udevice *dev, uint reg, const uint8_t *buff,
  20                int len)
  21{
  22        int ret;
  23
  24        ret = dm_i2c_write(dev, reg, buff, len);
  25        if (ret)
  26                pr_err("write error to device: %p register: %#x!\n", dev, reg);
  27
  28        return ret;
  29}
  30
  31static int max8997_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
  32{
  33        int ret;
  34
  35        ret = dm_i2c_read(dev, reg, buff, len);
  36        if (ret)
  37                pr_err("read error from device: %p register: %#x!\n", dev, reg);
  38
  39        return ret;
  40}
  41
  42static struct dm_pmic_ops max8997_ops = {
  43        .reg_count = max8997_reg_count,
  44        .read   = max8997_read,
  45        .write  = max8997_write,
  46};
  47
  48static const struct udevice_id max8997_ids[] = {
  49        { .compatible = "maxim,max8997" },
  50        { },
  51};
  52
  53U_BOOT_DRIVER(pmic_max8997) = {
  54        .name           = "max8997_pmic",
  55        .id             = UCLASS_PMIC,
  56        .of_match       = max8997_ids,
  57        .ops            = &max8997_ops,
  58};
  59