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 <log.h>
  13#include <power/pmic.h>
  14#include <power/regulator.h>
  15#include <power/lp87565.h>
  16#include <dm/device.h>
  17
  18static const struct pmic_child_info pmic_children_info[] = {
  19        { .prefix = "buck", .driver = LP87565_BUCK_DRIVER },
  20        { },
  21};
  22
  23static int lp87565_write(struct udevice *dev, uint reg, const uint8_t *buff,
  24                          int len)
  25{
  26        int ret;
  27
  28        ret = dm_i2c_write(dev, reg, buff, len);
  29        if (ret)
  30                pr_err("write error to device: %p register: %#x!\n", dev, reg);
  31
  32        return ret;
  33}
  34
  35static int lp87565_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
  36{
  37        int ret;
  38
  39        ret = dm_i2c_read(dev, reg, buff, len);
  40        if (ret)
  41                pr_err("read error from device: %p register: %#x!\n", dev, reg);
  42
  43        return ret;
  44}
  45
  46static int lp87565_bind(struct udevice *dev)
  47{
  48        ofnode regulators_node;
  49        int children;
  50
  51        regulators_node = dev_read_subnode(dev, "regulators");
  52        if (!ofnode_valid(regulators_node)) {
  53                debug("%s: %s regulators subnode not found!\n", __func__,
  54                      dev->name);
  55                return -ENXIO;
  56        }
  57
  58        debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
  59
  60        children = pmic_bind_children(dev, regulators_node, pmic_children_info);
  61        if (!children)
  62                printf("%s: %s - no child found\n", __func__, dev->name);
  63
  64        /* Always return success for this device */
  65        return 0;
  66}
  67
  68static struct dm_pmic_ops lp87565_ops = {
  69        .read = lp87565_read,
  70        .write = lp87565_write,
  71};
  72
  73static const struct udevice_id lp87565_ids[] = {
  74        { .compatible = "ti,lp87565", .data = LP87565 },
  75        { .compatible = "ti,lp87565-q1", .data = LP87565_Q1 },
  76        { }
  77};
  78
  79U_BOOT_DRIVER(pmic_lp87565) = {
  80        .name = "lp87565_pmic",
  81        .id = UCLASS_PMIC,
  82        .of_match = lp87565_ids,
  83        .bind = lp87565_bind,
  84        .ops = &lp87565_ops,
  85};
  86