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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Keerthycdad57a2017-06-07 19:08:28 +05302/*
3 * (C) Copyright 2017 Texas Instruments Incorporated, <www.ti.com>
4 * Keerthy <j-keerthy@ti.com>
Keerthycdad57a2017-06-07 19:08:28 +05305 */
6
7#include <common.h>
8#include <fdtdec.h>
9#include <errno.h>
10#include <dm.h>
11#include <i2c.h>
12#include <power/pmic.h>
13#include <power/regulator.h>
14#include <power/lp87565.h>
15#include <dm/device.h>
16
Keerthycdad57a2017-06-07 19:08:28 +053017static const struct pmic_child_info pmic_children_info[] = {
18 { .prefix = "buck", .driver = LP87565_BUCK_DRIVER },
19 { },
20};
21
22static int lp87565_write(struct udevice *dev, uint reg, const uint8_t *buff,
23 int len)
24{
25 int ret;
26
27 ret = dm_i2c_write(dev, reg, buff, len);
28 if (ret)
Masahiro Yamada9b643e32017-09-16 14:10:41 +090029 pr_err("write error to device: %p register: %#x!", dev, reg);
Keerthycdad57a2017-06-07 19:08:28 +053030
31 return ret;
32}
33
34static int lp87565_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
35{
36 int ret;
37
38 ret = dm_i2c_read(dev, reg, buff, len);
39 if (ret)
Masahiro Yamada9b643e32017-09-16 14:10:41 +090040 pr_err("read error from device: %p register: %#x!", dev, reg);
Keerthycdad57a2017-06-07 19:08:28 +053041
42 return ret;
43}
44
45static int lp87565_bind(struct udevice *dev)
46{
47 ofnode regulators_node;
48 int children;
49
50 regulators_node = dev_read_subnode(dev, "regulators");
51 if (!ofnode_valid(regulators_node)) {
52 debug("%s: %s regulators subnode not found!", __func__,
53 dev->name);
54 return -ENXIO;
55 }
56
57 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
58
59 children = pmic_bind_children(dev, regulators_node, pmic_children_info);
60 if (!children)
61 printf("%s: %s - no child found\n", __func__, dev->name);
62
63 /* Always return success for this device */
64 return 0;
65}
66
67static struct dm_pmic_ops lp87565_ops = {
68 .read = lp87565_read,
69 .write = lp87565_write,
70};
71
72static const struct udevice_id lp87565_ids[] = {
73 { .compatible = "ti,lp87565", .data = LP87565 },
74 { .compatible = "ti,lp87565-q1", .data = LP87565_Q1 },
75 { }
76};
77
78U_BOOT_DRIVER(pmic_lp87565) = {
79 .name = "lp87565_pmic",
80 .id = UCLASS_PMIC,
81 .of_match = lp87565_ids,
82 .bind = lp87565_bind,
83 .ops = &lp87565_ops,
84};