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// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
/*
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/stpmu1.h>
#define STMPU1_NUM_OF_REGS 0x100
#ifndef CONFIG_SPL_BUILD
static const struct pmic_child_info stpmu1_children_info[] = {
{ .prefix = "ldo", .driver = "stpmu1_ldo" },
{ .prefix = "buck", .driver = "stpmu1_buck" },
{ .prefix = "vref_ddr", .driver = "stpmu1_vref_ddr" },
{ .prefix = "pwr_sw", .driver = "stpmu1_pwr_sw" },
{ .prefix = "boost", .driver = "stpmu1_boost" },
{ },
};
#endif /* CONFIG_SPL_BUILD */
static int stpmu1_reg_count(struct udevice *dev)
{
return STMPU1_NUM_OF_REGS;
}
static int stpmu1_write(struct udevice *dev, uint reg, const uint8_t *buff,
int len)
{
int ret;
ret = dm_i2c_write(dev, reg, buff, len);
if (ret)
dev_err(dev, "%s: failed to write register %#x :%d",
__func__, reg, ret);
return ret;
}
static int stpmu1_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
int ret;
ret = dm_i2c_read(dev, reg, buff, len);
if (ret)
dev_err(dev, "%s: failed to read register %#x : %d",
__func__, reg, ret);
return ret;
}
static int stpmu1_bind(struct udevice *dev)
{
#ifndef CONFIG_SPL_BUILD
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(regulators_node)) {
dev_dbg(dev, "regulators subnode not found!");
return -ENXIO;
}
dev_dbg(dev, "found regulators subnode\n");
children = pmic_bind_children(dev, regulators_node,
stpmu1_children_info);
if (!children)
dev_dbg(dev, "no child found\n");
#endif /* CONFIG_SPL_BUILD */
return 0;
}
static struct dm_pmic_ops stpmu1_ops = {
.reg_count = stpmu1_reg_count,
.read = stpmu1_read,
.write = stpmu1_write,
};
static const struct udevice_id stpmu1_ids[] = {
{ .compatible = "st,stpmu1" },
{ }
};
U_BOOT_DRIVER(pmic_stpmu1) = {
.name = "stpmu1_pmic",
.id = UCLASS_PMIC,
.of_match = stpmu1_ids,
.bind = stpmu1_bind,
.ops = &stpmu1_ops,
};
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