mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 18:28:55 +00:00
90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <fdtdec.h>
|
|
#include <i2c.h>
|
|
#include <log.h>
|
|
#include <power/pmic.h>
|
|
#include <power/tps65090.h>
|
|
|
|
static const struct pmic_child_info pmic_children_info[] = {
|
|
{ .prefix = "fet", .driver = TPS65090_FET_DRIVER },
|
|
{ },
|
|
};
|
|
|
|
static int tps65090_reg_count(struct udevice *dev)
|
|
{
|
|
return TPS65090_NUM_REGS;
|
|
}
|
|
|
|
static int tps65090_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 tps65090_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 %d from device: %p register: %#x!\n", ret,
|
|
dev, reg);
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tps65090_bind(struct udevice *dev)
|
|
{
|
|
ofnode regulators_node;
|
|
int children;
|
|
|
|
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);
|
|
|
|
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 tps65090_ops = {
|
|
.reg_count = tps65090_reg_count,
|
|
.read = tps65090_read,
|
|
.write = tps65090_write,
|
|
};
|
|
|
|
static const struct udevice_id tps65090_ids[] = {
|
|
{ .compatible = "ti,tps65090" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(pmic_tps65090) = {
|
|
.name = "tps65090 pmic",
|
|
.id = UCLASS_PMIC,
|
|
.of_match = tps65090_ids,
|
|
.bind = tps65090_bind,
|
|
.ops = &tps65090_ops,
|
|
};
|