blob: 6180adf77e2d02d75e6fe66ff89bf9c9a03d7888 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2020 Gateworks Corporation
*/
#include <common.h>
#include <errno.h>
#include <dm.h>
#include <i2c.h>
#include <log.h>
#include <power/pmic.h>
#include <power/regulator.h>
#include <power/mp5416.h>
#include <asm/global_data.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct pmic_child_info pmic_children_info[] = {
/* buck */
{ .prefix = "b", .driver = MP6416_REGULATOR_DRIVER },
/* ldo */
{ .prefix = "l", .driver = MP6416_REGULATOR_DRIVER },
{ },
};
static int mp5416_reg_count(struct udevice *dev)
{
return MP5416_NUM_OF_REGS - 1;
}
static int mp5416_write(struct udevice *dev, uint reg, const uint8_t *buff,
int len)
{
if (dm_i2c_write(dev, reg, buff, len)) {
pr_err("write error to device: %p register: %#x!", dev, reg);
return -EIO;
}
return 0;
}
static int mp5416_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
if (dm_i2c_read(dev, reg, buff, len)) {
pr_err("read error from device: %p register: %#x!", dev, reg);
return -EIO;
}
return 0;
}
static int mp5416_bind(struct udevice *dev)
{
int children;
ofnode regulators_node;
debug("%s %s\n", __func__, dev->name);
regulators_node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(regulators_node)) {
debug("%s: %s regulators subnode not found!\n", __func__,
dev->name);
return -ENXIO;
}
debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
debug("%s: %s - no child found\n", __func__, dev->name);
/* Always return success for this device */
return 0;
}
static int mp5416_probe(struct udevice *dev)
{
debug("%s %s\n", __func__, dev->name);
return 0;
}
static struct dm_pmic_ops mp5416_ops = {
.reg_count = mp5416_reg_count,
.read = mp5416_read,
.write = mp5416_write,
};
static const struct udevice_id mp5416_ids[] = {
{ .compatible = "mps,mp5416", },
{ }
};
U_BOOT_DRIVER(pmic_mp5416) = {
.name = "mp5416 pmic",
.id = UCLASS_PMIC,
.of_match = mp5416_ids,
.bind = mp5416_bind,
.probe = mp5416_probe,
.ops = &mp5416_ops,
};