lp873x.c
1.81 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
* Keerthy <j-keerthy@ti.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/lp873x.h>
#include <dm/device.h>
static const struct pmic_child_info pmic_children_info[] = {
{ .prefix = "ldo", .driver = LP873X_LDO_DRIVER },
{ .prefix = "buck", .driver = LP873X_BUCK_DRIVER },
{ },
};
static int lp873x_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 lp873x_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 lp873x_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;
}
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
printf("%s: %s - no child found\n", __func__, dev->name);
/* Always return success for this device */
return 0;
}
static struct dm_pmic_ops lp873x_ops = {
.read = lp873x_read,
.write = lp873x_write,
};
static const struct udevice_id lp873x_ids[] = {
{ .compatible = "ti,lp8732", .data = LP8732 },
{ .compatible = "ti,lp8733" , .data = LP8733 },
{ }
};
U_BOOT_DRIVER(pmic_lp873x) = {
.name = "lp873x_pmic",
.id = UCLASS_PMIC,
.of_match = lp873x_ids,
.bind = lp873x_bind,
.ops = &lp873x_ops,
};