105 lines
2.2 KiB
C
105 lines
2.2 KiB
C
/*
|
|
* (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(dev);
|
|
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,
|
|
};
|