pmic_tps65910_dm.c
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/*
* Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/regulator.h>
#include <power/tps65910_pmic.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct pmic_child_info pmic_children_info[] = {
{ .prefix = "ldo_", .driver = TPS65910_LDO_DRIVER },
{ .prefix = "buck_", .driver = TPS65910_BUCK_DRIVER },
{ .prefix = "boost_", .driver = TPS65910_BOOST_DRIVER },
{ },
};
static int pmic_tps65910_reg_count(struct udevice *dev)
{
return TPS65910_NUM_REGS;
}
static int pmic_tps65910_write(struct udevice *dev, uint reg, const u8 *buffer,
int len)
{
int ret;
ret = dm_i2c_write(dev, reg, buffer, len);
if (ret)
pr_err("%s write error on register %02x\n", dev->name, reg);
return ret;
}
static int pmic_tps65910_read(struct udevice *dev, uint reg, u8 *buffer,
int len)
{
int ret;
ret = dm_i2c_read(dev, reg, buffer, len);
if (ret)
pr_err("%s read error on register %02x\n", dev->name, reg);
return ret;
}
static int pmic_tps65910_bind(struct udevice *dev)
{
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(regulators_node)) {
debug("%s regulators subnode not found\n", dev->name);
return -EINVAL;
}
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
debug("%s has no children (regulators)\n", dev->name);
return 0;
}
static int pmic_tps65910_probe(struct udevice *dev)
{
/* use I2C control interface instead of I2C smartreflex interface to
* access smartrefelex registers VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG
* and VDD2_SR_REG
*/
return pmic_clrsetbits(dev, TPS65910_REG_DEVICE_CTRL, 0,
TPS65910_I2C_SEL_MASK);
}
static struct dm_pmic_ops pmic_tps65910_ops = {
.reg_count = pmic_tps65910_reg_count,
.read = pmic_tps65910_read,
.write = pmic_tps65910_write,
};
static const struct udevice_id pmic_tps65910_match[] = {
{ .compatible = "ti,tps65910" },
{ /* sentinel */ }
};
U_BOOT_DRIVER(pmic_tps65910) = {
.name = "pmic_tps65910",
.id = UCLASS_PMIC,
.of_match = pmic_tps65910_match,
.bind = pmic_tps65910_bind,
.probe = pmic_tps65910_probe,
.ops = &pmic_tps65910_ops,
};