mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
173f023f46
Add the probe function to support the s2mps11 regulator driver. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Anand Moon <linux.amoon@gmail.com>
90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2015 Samsung Electronics
|
|
* Przemyslaw Marczak <p.marczak@samsung.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <fdtdec.h>
|
|
#include <errno.h>
|
|
#include <dm.h>
|
|
#include <i2c.h>
|
|
#include <power/pmic.h>
|
|
#include <power/s2mps11.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static const struct pmic_child_info pmic_children_info[] = {
|
|
{ .prefix = S2MPS11_OF_LDO_PREFIX, .driver = S2MPS11_LDO_DRIVER },
|
|
{ .prefix = S2MPS11_OF_BUCK_PREFIX, .driver = S2MPS11_BUCK_DRIVER },
|
|
{ },
|
|
};
|
|
|
|
static int s2mps11_reg_count(struct udevice *dev)
|
|
{
|
|
return S2MPS11_REG_COUNT;
|
|
}
|
|
|
|
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!", 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!", dev, reg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int s2mps11_probe(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);
|
|
|
|
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" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(pmic_s2mps11) = {
|
|
.name = "s2mps11_pmic",
|
|
.id = UCLASS_PMIC,
|
|
.of_match = s2mps11_ids,
|
|
.ops = &s2mps11_ops,
|
|
.probe = s2mps11_probe,
|
|
};
|