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/*
* Copyright (C) 2015 Freescale Semiconductor, Inc
* Peng Fan <Peng.Fan@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fdtdec.h>
#include <errno.h>
#include <dm.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/regulator.h>
#include <power/pfuze100_pmic.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct pmic_child_info pmic_children_info[] = {
/* sw[x], swbst */
{ .prefix = "s", .driver = PFUZE100_REGULATOR_DRIVER },
/* vgen[x], vsnvs, vcc, v33, vcc_sd */
{ .prefix = "v", .driver = PFUZE100_REGULATOR_DRIVER },
{ },
};
static int pfuze100_reg_count(struct udevice *dev)
{
return PFUZE100_NUM_OF_REGS;
}
static int pfuze100_write(struct udevice *dev, uint reg, const uint8_t *buff,
int len)
{
if (dm_i2c_write(dev, reg, buff, len)) {
error("write error to device: %p register: %#x!", dev, reg);
return -EIO;
}
return 0;
}
static int pfuze100_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
if (dm_i2c_read(dev, reg, buff, len)) {
error("read error from device: %p register: %#x!", dev, reg);
return -EIO;
}
return 0;
}
static int pfuze100_bind(struct udevice *dev)
{
int children;
int regulators_node;
const void *blob = gd->fdt_blob;
regulators_node = fdt_subnode_offset(blob, dev_of_offset(dev),
"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 pfuze100_ops = {
.reg_count = pfuze100_reg_count,
.read = pfuze100_read,
.write = pfuze100_write,
};
static const struct udevice_id pfuze100_ids[] = {
{ .compatible = "fsl,pfuze100", .data = PFUZE100, },
{ .compatible = "fsl,pfuze200", .data = PFUZE200, },
{ .compatible = "fsl,pfuze3000", .data = PFUZE3000, },
{ }
};
U_BOOT_DRIVER(pmic_pfuze100) = {
.name = "pfuze100 pmic",
.id = UCLASS_PMIC,
.of_match = pfuze100_ids,
.bind = pfuze100_bind,
.ops = &pfuze100_ops,
};
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