LXR uboot/drivers/power/pmic/lp87565.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * (C) Copyright 2017 Texas Instruments Incorporated, <www.ti.com>
   4 * Keerthy <j-keerthy@ti.com>
   5 */
   6
   7#include <common.h>
   8#include <fdtdec.h>
   9#include <errno.h>
  10#include <dm.h>
  11#include <i2c.h>
  12#include <power/pmic.h>
  13#include <power/regulator.h>
  14#include <power/lp87565.h>
  15#include <dm/device.h>
  16
  17static const struct pmic_child_info pmic_children_info[] = {
  18        { .prefix = "buck", .driver = LP87565_BUCK_DRIVER },
  19        { },
  20};
  21
  22static int lp87565_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                pr_err("write error to device: %p register: %#x!\n", dev, reg);
  30
  31        return ret;
  32}
  33
  34static int lp87565_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                pr_err("read error from device: %p register: %#x!\n", dev, reg);
  41
  42        return ret;
  43}
  44
  45static int lp87565_bind(struct udevice *dev)
  46{
  47        ofnode regulators_node;
  48        int children;
  49
  50        regulators_node = dev_read_subnode(dev, "regulators");
  51        if (!ofnode_valid(regulators_node)) {
  52                debug("%s: %s regulators subnode not found!\n", __func__,
  53                      dev->name);
  54                return -ENXIO;
  55        }
  56
  57        debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
  58
  59        children = pmic_bind_children(dev, regulators_node, pmic_children_info);
  60        if (!children)
  61                printf("%s: %s - no child found\n", __func__, dev->name);
  62
  63        /* Always return success for this device */
  64        return 0;
  65}
  66
  67static struct dm_pmic_ops lp87565_ops = {
  68        .read = lp87565_read,
  69        .write = lp87565_write,
  70};
  71
  72static const struct udevice_id lp87565_ids[] = {
  73        { .compatible = "ti,lp87565", .data = LP87565 },
  74        { .compatible = "ti,lp87565-q1", .data = LP87565_Q1 },
  75        { }
  76};
  77
  78U_BOOT_DRIVER(pmic_lp87565) = {
  79        .name = "lp87565_pmic",
  80        .id = UCLASS_PMIC,
  81        .of_match = lp87565_ids,
  82        .bind = lp87565_bind,
  83        .ops = &lp87565_ops,
  84};
  85