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/*
* Copyright (C) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <power/act8846_pmic.h>
#include <power/pmic.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct pmic_child_info pmic_children_info[] = {
{ .prefix = "REG", .driver = "act8846_reg"},
{ },
};
static int act8846_reg_count(struct udevice *dev)
{
return ACT8846_NUM_OF_REGS;
}
static int act8846_write(struct udevice *dev, uint reg, const uint8_t *buff,
int len)
{
if (dm_i2c_write(dev, reg, buff, len)) {
debug("write error to device: %p register: %#x!", dev, reg);
return -EIO;
}
return 0;
}
static int act8846_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
if (dm_i2c_read(dev, reg, buff, len)) {
debug("read error from device: %p register: %#x!", dev, reg);
return -EIO;
}
return 0;
}
static int act8846_bind(struct udevice *dev)
{
const void *blob = gd->fdt_blob;
int regulators_node;
int children;
regulators_node = fdt_subnode_offset(blob, dev->of_offset,
"regulators");
if (regulators_node <= 0) {
debug("%s: %s regulators subnode not found!", __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 struct dm_pmic_ops act8846_ops = {
.reg_count = act8846_reg_count,
.read = act8846_read,
.write = act8846_write,
};
static const struct udevice_id act8846_ids[] = {
{ .compatible = "active-semi,act8846" },
{ }
};
U_BOOT_DRIVER(pmic_act8846) = {
.name = "act8846 pmic",
.id = UCLASS_PMIC,
.of_match = act8846_ids,
.bind = act8846_bind,
.ops = &act8846_ops,
};
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