1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
3*4882a593Smuzhiyun * Keerthy <j-keerthy@ti.com>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <fdtdec.h>
10*4882a593Smuzhiyun #include <errno.h>
11*4882a593Smuzhiyun #include <dm.h>
12*4882a593Smuzhiyun #include <i2c.h>
13*4882a593Smuzhiyun #include <power/pmic.h>
14*4882a593Smuzhiyun #include <power/regulator.h>
15*4882a593Smuzhiyun #include <power/lp873x.h>
16*4882a593Smuzhiyun #include <dm/device.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun static const struct pmic_child_info pmic_children_info[] = {
21*4882a593Smuzhiyun { .prefix = "ldo", .driver = LP873X_LDO_DRIVER },
22*4882a593Smuzhiyun { .prefix = "buck", .driver = LP873X_BUCK_DRIVER },
23*4882a593Smuzhiyun { },
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun
lp873x_write(struct udevice * dev,uint reg,const uint8_t * buff,int len)26*4882a593Smuzhiyun static int lp873x_write(struct udevice *dev, uint reg, const uint8_t *buff,
27*4882a593Smuzhiyun int len)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun if (dm_i2c_write(dev, reg, buff, len)) {
30*4882a593Smuzhiyun pr_err("write error to device: %p register: %#x!", dev, reg);
31*4882a593Smuzhiyun return -EIO;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun return 0;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
lp873x_read(struct udevice * dev,uint reg,uint8_t * buff,int len)37*4882a593Smuzhiyun static int lp873x_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun if (dm_i2c_read(dev, reg, buff, len)) {
40*4882a593Smuzhiyun pr_err("read error from device: %p register: %#x!", dev, reg);
41*4882a593Smuzhiyun return -EIO;
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun return 0;
45*4882a593Smuzhiyun }
46*4882a593Smuzhiyun
lp873x_bind(struct udevice * dev)47*4882a593Smuzhiyun static int lp873x_bind(struct udevice *dev)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun ofnode regulators_node;
50*4882a593Smuzhiyun int children;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun regulators_node = dev_read_subnode(dev, "regulators");
53*4882a593Smuzhiyun if (!ofnode_valid(regulators_node)) {
54*4882a593Smuzhiyun debug("%s: %s regulators subnode not found!", __func__,
55*4882a593Smuzhiyun dev->name);
56*4882a593Smuzhiyun return -ENXIO;
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun children = pmic_bind_children(dev, regulators_node, pmic_children_info);
60*4882a593Smuzhiyun if (!children)
61*4882a593Smuzhiyun printf("%s: %s - no child found\n", __func__, dev->name);
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun /* Always return success for this device */
64*4882a593Smuzhiyun return 0;
65*4882a593Smuzhiyun }
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun static struct dm_pmic_ops lp873x_ops = {
68*4882a593Smuzhiyun .read = lp873x_read,
69*4882a593Smuzhiyun .write = lp873x_write,
70*4882a593Smuzhiyun };
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun static const struct udevice_id lp873x_ids[] = {
73*4882a593Smuzhiyun { .compatible = "ti,lp8732", .data = LP8732 },
74*4882a593Smuzhiyun { .compatible = "ti,lp8733" , .data = LP8733 },
75*4882a593Smuzhiyun { }
76*4882a593Smuzhiyun };
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun U_BOOT_DRIVER(pmic_lp873x) = {
79*4882a593Smuzhiyun .name = "lp873x_pmic",
80*4882a593Smuzhiyun .id = UCLASS_PMIC,
81*4882a593Smuzhiyun .of_match = lp873x_ids,
82*4882a593Smuzhiyun .bind = lp873x_bind,
83*4882a593Smuzhiyun .ops = &lp873x_ops,
84*4882a593Smuzhiyun };
85