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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Samsung Electronics
* Przemyslaw Marczak <[email protected]>
*/
#include <fdtdec.h>
#include <errno.h>
#include <dm.h>
#include <i2c.h>
#include <log.h>
#include <linux/printk.h>
#include <power/pmic.h>
#include <power/s2mps11.h>
static const struct pmic_child_info s2mps11_pmic_children_info[] = {
{ .prefix = S2MPS11_OF_LDO_PREFIX, .driver = S2MPS11_LDO_DRIVER },
{ .prefix = S2MPS11_OF_BUCK_PREFIX, .driver = S2MPS11_BUCK_DRIVER },
{ },
};
static const struct pmic_child_info s2mpu05_pmic_children_info[] = {
{ .prefix = S2MPU05_OF_LDO_PREFIX, .driver = S2MPS11_LDO_DRIVER },
{ .prefix = S2MPU05_OF_BUCK_PREFIX, .driver = S2MPS11_BUCK_DRIVER },
{ },
};
static int s2mps11_reg_count(struct udevice *dev)
{
switch (dev_get_driver_data(dev)) {
case VARIANT_S2MPS11:
return S2MPS11_REG_COUNT;
case VARIANT_S2MPU05:
return S2MPU05_REG_COUNT;
default:
return -EINVAL;
}
}
static int s2mps11_write(struct udevice *dev, uint reg, const uint8_t *buff,
int len)
{
int ret;
ret = dm_i2c_write(dev, reg, buff, len);
if (ret)
pr_err("write error to device: %p register: %#x!\n", dev, reg);
return ret;
}
static int s2mps11_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
int ret;
ret = dm_i2c_read(dev, reg, buff, len);
if (ret)
pr_err("read error from device: %p register: %#x!\n", dev, reg);
return ret;
}
static int s2mps11_bind(struct udevice *dev)
{
ofnode regulators_node;
int children;
const struct pmic_child_info *pmic_children_info;
regulators_node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(regulators_node)) {
debug("%s: %s regulators subnode not found!\n", __func__,
dev->name);
return -ENXIO;
}
debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
switch (dev_get_driver_data(dev)) {
case VARIANT_S2MPS11:
pmic_children_info = s2mps11_pmic_children_info;
break;
case VARIANT_S2MPU05:
pmic_children_info = s2mpu05_pmic_children_info;
break;
default:
debug("%s: unknown device type\n", __func__);
return -EINVAL;
}
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
debug("%s: %s - no child found\n", __func__, dev->name);
return 0;
}
static struct dm_pmic_ops s2mps11_ops = {
.reg_count = s2mps11_reg_count,
.read = s2mps11_read,
.write = s2mps11_write,
};
static const struct udevice_id s2mps11_ids[] = {
{ .compatible = "samsung,s2mps11-pmic", .data = VARIANT_S2MPS11 },
{ .compatible = "samsung,s2mpu05-pmic", .data = VARIANT_S2MPU05 },
{ }
};
U_BOOT_DRIVER(pmic_s2mps11) = {
.name = "s2mps11_pmic",
.id = UCLASS_PMIC,
.of_match = s2mps11_ids,
.ops = &s2mps11_ops,
.bind = s2mps11_bind,
};
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