1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2015 Google, Inc
3*4882a593Smuzhiyun * Written by Simon Glass <sjg@chromium.org>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <dm.h>
10*4882a593Smuzhiyun #include <errno.h>
11*4882a593Smuzhiyun #include <fdtdec.h>
12*4882a593Smuzhiyun #include <i2c.h>
13*4882a593Smuzhiyun #include <power/pmic.h>
14*4882a593Smuzhiyun #include <power/tps65090.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun static const struct pmic_child_info pmic_children_info[] = {
19*4882a593Smuzhiyun { .prefix = "fet", .driver = TPS65090_FET_DRIVER },
20*4882a593Smuzhiyun { },
21*4882a593Smuzhiyun };
22*4882a593Smuzhiyun
tps65090_reg_count(struct udevice * dev)23*4882a593Smuzhiyun static int tps65090_reg_count(struct udevice *dev)
24*4882a593Smuzhiyun {
25*4882a593Smuzhiyun return TPS65090_NUM_REGS;
26*4882a593Smuzhiyun }
27*4882a593Smuzhiyun
tps65090_write(struct udevice * dev,uint reg,const uint8_t * buff,int len)28*4882a593Smuzhiyun static int tps65090_write(struct udevice *dev, uint reg, const uint8_t *buff,
29*4882a593Smuzhiyun int len)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun if (dm_i2c_write(dev, reg, buff, len)) {
32*4882a593Smuzhiyun pr_err("write error to device: %p register: %#x!", dev, reg);
33*4882a593Smuzhiyun return -EIO;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun return 0;
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun
tps65090_read(struct udevice * dev,uint reg,uint8_t * buff,int len)39*4882a593Smuzhiyun static int tps65090_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun int ret;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun ret = dm_i2c_read(dev, reg, buff, len);
44*4882a593Smuzhiyun if (ret) {
45*4882a593Smuzhiyun pr_err("read error %d from device: %p register: %#x!", ret, dev,
46*4882a593Smuzhiyun reg);
47*4882a593Smuzhiyun return -EIO;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun return 0;
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
tps65090_bind(struct udevice * dev)53*4882a593Smuzhiyun static int tps65090_bind(struct udevice *dev)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun ofnode regulators_node;
56*4882a593Smuzhiyun int children;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun regulators_node = dev_read_subnode(dev, "regulators");
59*4882a593Smuzhiyun if (!ofnode_valid(regulators_node)) {
60*4882a593Smuzhiyun debug("%s: %s regulators subnode not found!", __func__,
61*4882a593Smuzhiyun dev->name);
62*4882a593Smuzhiyun return -ENXIO;
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun children = pmic_bind_children(dev, regulators_node, pmic_children_info);
68*4882a593Smuzhiyun if (!children)
69*4882a593Smuzhiyun debug("%s: %s - no child found\n", __func__, dev->name);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun /* Always return success for this device */
72*4882a593Smuzhiyun return 0;
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun static struct dm_pmic_ops tps65090_ops = {
76*4882a593Smuzhiyun .reg_count = tps65090_reg_count,
77*4882a593Smuzhiyun .read = tps65090_read,
78*4882a593Smuzhiyun .write = tps65090_write,
79*4882a593Smuzhiyun };
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun static const struct udevice_id tps65090_ids[] = {
82*4882a593Smuzhiyun { .compatible = "ti,tps65090" },
83*4882a593Smuzhiyun { }
84*4882a593Smuzhiyun };
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun U_BOOT_DRIVER(pmic_tps65090) = {
87*4882a593Smuzhiyun .name = "tps65090 pmic",
88*4882a593Smuzhiyun .id = UCLASS_PMIC,
89*4882a593Smuzhiyun .of_match = tps65090_ids,
90*4882a593Smuzhiyun .bind = tps65090_bind,
91*4882a593Smuzhiyun .ops = &tps65090_ops,
92*4882a593Smuzhiyun };
93