u-boot/drivers/power/pmic/max77686.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

87 lines
2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014-2015 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/max77686_pmic.h>
static const struct pmic_child_info pmic_children_info[] = {
{ .prefix = "LDO", .driver = MAX77686_LDO_DRIVER },
{ .prefix = "BUCK", .driver = MAX77686_BUCK_DRIVER },
{ },
};
static int max77686_reg_count(struct udevice *dev)
{
return MAX77686_NUM_OF_REGS;
}
static int max77686_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!", dev, reg);
return -EIO;
}
return 0;
}
static int max77686_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!", dev, reg);
return -EIO;
}
return 0;
}
static int max77686_bind(struct udevice *dev)
{
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "voltage-regulators");
if (!ofnode_valid(regulators_node)) {
debug("%s: %s regulators subnode not found!", __func__,
dev->name);
return -ENXIO;
}
debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
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 max77686_ops = {
.reg_count = max77686_reg_count,
.read = max77686_read,
.write = max77686_write,
};
static const struct udevice_id max77686_ids[] = {
{ .compatible = "maxim,max77686" },
{ }
};
U_BOOT_DRIVER(pmic_max77686) = {
.name = "max77686_pmic",
.id = UCLASS_PMIC,
.of_match = max77686_ids,
.bind = max77686_bind,
.ops = &max77686_ops,
};