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/*
* (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
* Keerthy <j-keerthy@ti.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/palmas.h>
#include <dm/device.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct pmic_child_info pmic_children_info[] = {
{ .prefix = "ldo", .driver = PALMAS_LDO_DRIVER },
{ .prefix = "smps", .driver = PALMAS_SMPS_DRIVER },
{ },
};
static int palmas_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 palmas_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 palmas_bind(struct udevice *dev)
{
int pmic_node = -1, regulators_node;
const void *blob = gd->fdt_blob;
int children;
int node = dev->of_offset;
int subnode, len;
fdt_for_each_subnode(subnode, blob, node) {
const char *name;
char *temp;
name = fdt_get_name(blob, subnode, &len);
temp = strstr(name, "pmic");
if (temp) {
pmic_node = subnode;
break;
}
}
if (pmic_node <= 0) {
debug("%s: %s pmic subnode not found!", __func__, dev->name);
return -ENXIO;
}
regulators_node = fdt_subnode_offset(blob, pmic_node, "regulators");
if (regulators_node <= 0) {
debug("%s: %s reg subnode not found!", __func__, dev->name);
return -ENXIO;
}
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 palmas_ops = {
.read = palmas_read,
.write = palmas_write,
};
static const struct udevice_id palmas_ids[] = {
{ .compatible = "ti,tps659038", .data = TPS659038 },
{ .compatible = "ti,tps65917" , .data = TPS65917 },
{ }
};
U_BOOT_DRIVER(pmic_palmas) = {
.name = "palmas_pmic",
.id = UCLASS_PMIC,
.of_match = palmas_ids,
.bind = palmas_bind,
.ops = &palmas_ops,
};
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