1// SPDX-License-Identifier: GPL-2.0+
2/*
3 *  Copyright (C) 2015 Samsung Electronics
4 *  Przemyslaw Marczak  <p.marczak@samsung.com>
5 */
6
7#include <common.h>
8#include <fdtdec.h>
9#include <errno.h>
10#include <dm.h>
11#include <i2c.h>
12#include <log.h>
13#include <linux/printk.h>
14#include <power/pmic.h>
15#include <power/s2mps11.h>
16
17static const struct pmic_child_info pmic_children_info[] = {
18	{ .prefix = S2MPS11_OF_LDO_PREFIX, .driver = S2MPS11_LDO_DRIVER },
19	{ .prefix = S2MPS11_OF_BUCK_PREFIX, .driver = S2MPS11_BUCK_DRIVER },
20	{ },
21};
22
23static int s2mps11_reg_count(struct udevice *dev)
24{
25	return S2MPS11_REG_COUNT;
26}
27
28static int s2mps11_write(struct udevice *dev, uint reg, const uint8_t *buff,
29			 int len)
30{
31	int ret;
32
33	ret = dm_i2c_write(dev, reg, buff, len);
34	if (ret)
35		pr_err("write error to device: %p register: %#x!\n", dev, reg);
36
37	return ret;
38}
39
40static int s2mps11_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
41{
42	int ret;
43
44	ret = dm_i2c_read(dev, reg, buff, len);
45	if (ret)
46		pr_err("read error from device: %p register: %#x!\n", dev, reg);
47
48	return ret;
49}
50
51static int s2mps11_probe(struct udevice *dev)
52{
53	ofnode regulators_node;
54	int children;
55
56	regulators_node = dev_read_subnode(dev, "voltage-regulators");
57	if (!ofnode_valid(regulators_node)) {
58		debug("%s: %s regulators subnode not found!\n", __func__,
59		      dev->name);
60		return -ENXIO;
61	}
62
63	debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
64
65	children = pmic_bind_children(dev, regulators_node, pmic_children_info);
66	if (!children)
67		debug("%s: %s - no child found\n", __func__, dev->name);
68
69	return 0;
70}
71
72static struct dm_pmic_ops s2mps11_ops = {
73	.reg_count = s2mps11_reg_count,
74	.read = s2mps11_read,
75	.write = s2mps11_write,
76};
77
78static const struct udevice_id s2mps11_ids[] = {
79	{ .compatible = "samsung,s2mps11-pmic" },
80	{ }
81};
82
83U_BOOT_DRIVER(pmic_s2mps11) = {
84	.name = "s2mps11_pmic",
85	.id = UCLASS_PMIC,
86	.of_match = s2mps11_ids,
87	.ops = &s2mps11_ops,
88	.probe = s2mps11_probe,
89};
90