1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2017 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/lp87565.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 = "buck", .driver = LP87565_BUCK_DRIVER },
22*4882a593Smuzhiyun { },
23*4882a593Smuzhiyun };
24*4882a593Smuzhiyun
lp87565_write(struct udevice * dev,uint reg,const uint8_t * buff,int len)25*4882a593Smuzhiyun static int lp87565_write(struct udevice *dev, uint reg, const uint8_t *buff,
26*4882a593Smuzhiyun int len)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun int ret;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun ret = dm_i2c_write(dev, reg, buff, len);
31*4882a593Smuzhiyun if (ret)
32*4882a593Smuzhiyun pr_err("write error to device: %p register: %#x!", dev, reg);
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun return ret;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
lp87565_read(struct udevice * dev,uint reg,uint8_t * buff,int len)37*4882a593Smuzhiyun static int lp87565_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun int ret;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun ret = dm_i2c_read(dev, reg, buff, len);
42*4882a593Smuzhiyun if (ret)
43*4882a593Smuzhiyun pr_err("read error from device: %p register: %#x!", dev, reg);
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun return ret;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
lp87565_bind(struct udevice * dev)48*4882a593Smuzhiyun static int lp87565_bind(struct udevice *dev)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun ofnode regulators_node;
51*4882a593Smuzhiyun int children;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun regulators_node = dev_read_subnode(dev, "regulators");
54*4882a593Smuzhiyun if (!ofnode_valid(regulators_node)) {
55*4882a593Smuzhiyun debug("%s: %s regulators subnode not found!", __func__,
56*4882a593Smuzhiyun dev->name);
57*4882a593Smuzhiyun return -ENXIO;
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun children = pmic_bind_children(dev, regulators_node, pmic_children_info);
63*4882a593Smuzhiyun if (!children)
64*4882a593Smuzhiyun printf("%s: %s - no child found\n", __func__, dev->name);
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun /* Always return success for this device */
67*4882a593Smuzhiyun return 0;
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun static struct dm_pmic_ops lp87565_ops = {
71*4882a593Smuzhiyun .read = lp87565_read,
72*4882a593Smuzhiyun .write = lp87565_write,
73*4882a593Smuzhiyun };
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun static const struct udevice_id lp87565_ids[] = {
76*4882a593Smuzhiyun { .compatible = "ti,lp87565", .data = LP87565 },
77*4882a593Smuzhiyun { .compatible = "ti,lp87565-q1", .data = LP87565_Q1 },
78*4882a593Smuzhiyun { }
79*4882a593Smuzhiyun };
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun U_BOOT_DRIVER(pmic_lp87565) = {
82*4882a593Smuzhiyun .name = "lp87565_pmic",
83*4882a593Smuzhiyun .id = UCLASS_PMIC,
84*4882a593Smuzhiyun .of_match = lp87565_ids,
85*4882a593Smuzhiyun .bind = lp87565_bind,
86*4882a593Smuzhiyun .ops = &lp87565_ops,
87*4882a593Smuzhiyun };
88