77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2015 Samsung Electronics
|
|
* Przemyslaw Marczak <p.marczak@samsung.com>
|
|
*/
|
|
|
|
#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/sandbox_pmic.h>
|
|
|
|
static const struct pmic_child_info pmic_children_info[] = {
|
|
{ .prefix = SANDBOX_OF_LDO_PREFIX, .driver = SANDBOX_LDO_DRIVER },
|
|
{ .prefix = SANDBOX_OF_BUCK_PREFIX, .driver = SANDBOX_BUCK_DRIVER },
|
|
{ },
|
|
};
|
|
|
|
static int sandbox_pmic_reg_count(struct udevice *dev)
|
|
{
|
|
return SANDBOX_PMIC_REG_COUNT;
|
|
}
|
|
|
|
static int sandbox_pmic_write(struct udevice *dev, uint reg,
|
|
const uint8_t *buff, int len)
|
|
{
|
|
if (dm_i2c_write(dev, reg, buff, len)) {
|
|
pr_err("write error to device: %p register: %#x!\n", dev, reg);
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_pmic_read(struct udevice *dev, uint reg,
|
|
uint8_t *buff, int len)
|
|
{
|
|
if (dm_i2c_read(dev, reg, buff, len)) {
|
|
pr_err("read error from device: %p register: %#x!\n", dev, reg);
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_pmic_bind(struct udevice *dev)
|
|
{
|
|
if (!pmic_bind_children(dev, dev_ofnode(dev), pmic_children_info))
|
|
pr_err("%s:%d PMIC: %s - no child found!", __func__, __LINE__,
|
|
dev->name);
|
|
|
|
/* Always return success for this device - allows for PMIC I/O */
|
|
return 0;
|
|
}
|
|
|
|
static struct dm_pmic_ops sandbox_pmic_ops = {
|
|
.reg_count = sandbox_pmic_reg_count,
|
|
.read = sandbox_pmic_read,
|
|
.write = sandbox_pmic_write,
|
|
};
|
|
|
|
static const struct udevice_id sandbox_pmic_ids[] = {
|
|
{ .compatible = "sandbox,pmic" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(sandbox_pmic) = {
|
|
.name = "sandbox_pmic",
|
|
.id = UCLASS_PMIC,
|
|
.of_match = sandbox_pmic_ids,
|
|
.bind = sandbox_pmic_bind,
|
|
.ops = &sandbox_pmic_ops,
|
|
};
|