183d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
2ca1de0b5SKeerthy /*
3ca1de0b5SKeerthy * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
4ca1de0b5SKeerthy * Keerthy <j-keerthy@ti.com>
5ca1de0b5SKeerthy */
6ca1de0b5SKeerthy
7ca1de0b5SKeerthy #include <common.h>
8ca1de0b5SKeerthy #include <fdtdec.h>
9ca1de0b5SKeerthy #include <errno.h>
10ca1de0b5SKeerthy #include <dm.h>
11ca1de0b5SKeerthy #include <i2c.h>
12ca1de0b5SKeerthy #include <power/pmic.h>
13ca1de0b5SKeerthy #include <power/regulator.h>
14ca1de0b5SKeerthy #include <power/lp873x.h>
15ca1de0b5SKeerthy #include <dm/device.h>
16ca1de0b5SKeerthy
17ca1de0b5SKeerthy static const struct pmic_child_info pmic_children_info[] = {
18ca1de0b5SKeerthy { .prefix = "ldo", .driver = LP873X_LDO_DRIVER },
19ca1de0b5SKeerthy { .prefix = "buck", .driver = LP873X_BUCK_DRIVER },
20ca1de0b5SKeerthy { },
21ca1de0b5SKeerthy };
22ca1de0b5SKeerthy
lp873x_write(struct udevice * dev,uint reg,const uint8_t * buff,int len)23ca1de0b5SKeerthy static int lp873x_write(struct udevice *dev, uint reg, const uint8_t *buff,
24ca1de0b5SKeerthy int len)
25ca1de0b5SKeerthy {
26ca1de0b5SKeerthy if (dm_i2c_write(dev, reg, buff, len)) {
27*c83c436dSSimon Glass pr_err("write error to device: %p register: %#x!\n", dev, reg);
28ca1de0b5SKeerthy return -EIO;
29ca1de0b5SKeerthy }
30ca1de0b5SKeerthy
31ca1de0b5SKeerthy return 0;
32ca1de0b5SKeerthy }
33ca1de0b5SKeerthy
lp873x_read(struct udevice * dev,uint reg,uint8_t * buff,int len)34ca1de0b5SKeerthy static int lp873x_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
35ca1de0b5SKeerthy {
36ca1de0b5SKeerthy if (dm_i2c_read(dev, reg, buff, len)) {
37*c83c436dSSimon Glass pr_err("read error from device: %p register: %#x!\n", dev, reg);
38ca1de0b5SKeerthy return -EIO;
39ca1de0b5SKeerthy }
40ca1de0b5SKeerthy
41ca1de0b5SKeerthy return 0;
42ca1de0b5SKeerthy }
43ca1de0b5SKeerthy
lp873x_bind(struct udevice * dev)44ca1de0b5SKeerthy static int lp873x_bind(struct udevice *dev)
45ca1de0b5SKeerthy {
467a869e6cSSimon Glass ofnode regulators_node;
47ca1de0b5SKeerthy int children;
48ca1de0b5SKeerthy
497a869e6cSSimon Glass regulators_node = dev_read_subnode(dev, "regulators");
507a869e6cSSimon Glass if (!ofnode_valid(regulators_node)) {
51*c83c436dSSimon Glass debug("%s: %s regulators subnode not found!\n", __func__,
527a869e6cSSimon Glass dev->name);
53ca1de0b5SKeerthy return -ENXIO;
54ca1de0b5SKeerthy }
55ca1de0b5SKeerthy
56ca1de0b5SKeerthy children = pmic_bind_children(dev, regulators_node, pmic_children_info);
57ca1de0b5SKeerthy if (!children)
58ca1de0b5SKeerthy printf("%s: %s - no child found\n", __func__, dev->name);
59ca1de0b5SKeerthy
60ca1de0b5SKeerthy /* Always return success for this device */
61ca1de0b5SKeerthy return 0;
62ca1de0b5SKeerthy }
63ca1de0b5SKeerthy
64ca1de0b5SKeerthy static struct dm_pmic_ops lp873x_ops = {
65ca1de0b5SKeerthy .read = lp873x_read,
66ca1de0b5SKeerthy .write = lp873x_write,
67ca1de0b5SKeerthy };
68ca1de0b5SKeerthy
69ca1de0b5SKeerthy static const struct udevice_id lp873x_ids[] = {
70ca1de0b5SKeerthy { .compatible = "ti,lp8732", .data = LP8732 },
71ca1de0b5SKeerthy { .compatible = "ti,lp8733" , .data = LP8733 },
72ca1de0b5SKeerthy { }
73ca1de0b5SKeerthy };
74ca1de0b5SKeerthy
75ca1de0b5SKeerthy U_BOOT_DRIVER(pmic_lp873x) = {
76ca1de0b5SKeerthy .name = "lp873x_pmic",
77ca1de0b5SKeerthy .id = UCLASS_PMIC,
78ca1de0b5SKeerthy .of_match = lp873x_ids,
79ca1de0b5SKeerthy .bind = lp873x_bind,
80ca1de0b5SKeerthy .ops = &lp873x_ops,
81ca1de0b5SKeerthy };
82