183d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
2151b223bSSimon Glass /*
3151b223bSSimon Glass * Copyright (c) 2015 Google, Inc
4151b223bSSimon Glass * Written by Simon Glass <sjg@chromium.org>
5151b223bSSimon Glass */
6151b223bSSimon Glass
7151b223bSSimon Glass #include <common.h>
8151b223bSSimon Glass #include <dm.h>
9151b223bSSimon Glass #include <errno.h>
10151b223bSSimon Glass #include <fdtdec.h>
11151b223bSSimon Glass #include <i2c.h>
12151b223bSSimon Glass #include <power/pmic.h>
13151b223bSSimon Glass #include <power/tps65090.h>
14151b223bSSimon Glass
15151b223bSSimon Glass static const struct pmic_child_info pmic_children_info[] = {
16151b223bSSimon Glass { .prefix = "fet", .driver = TPS65090_FET_DRIVER },
17151b223bSSimon Glass { },
18151b223bSSimon Glass };
19151b223bSSimon Glass
tps65090_reg_count(struct udevice * dev)20151b223bSSimon Glass static int tps65090_reg_count(struct udevice *dev)
21151b223bSSimon Glass {
22151b223bSSimon Glass return TPS65090_NUM_REGS;
23151b223bSSimon Glass }
24151b223bSSimon Glass
tps65090_write(struct udevice * dev,uint reg,const uint8_t * buff,int len)25151b223bSSimon Glass static int tps65090_write(struct udevice *dev, uint reg, const uint8_t *buff,
26151b223bSSimon Glass int len)
27151b223bSSimon Glass {
28151b223bSSimon Glass if (dm_i2c_write(dev, reg, buff, len)) {
29*c83c436dSSimon Glass pr_err("write error to device: %p register: %#x!\n", dev, reg);
30151b223bSSimon Glass return -EIO;
31151b223bSSimon Glass }
32151b223bSSimon Glass
33151b223bSSimon Glass return 0;
34151b223bSSimon Glass }
35151b223bSSimon Glass
tps65090_read(struct udevice * dev,uint reg,uint8_t * buff,int len)36151b223bSSimon Glass static int tps65090_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
37151b223bSSimon Glass {
38151b223bSSimon Glass int ret;
39151b223bSSimon Glass
40151b223bSSimon Glass ret = dm_i2c_read(dev, reg, buff, len);
41151b223bSSimon Glass if (ret) {
42*c83c436dSSimon Glass pr_err("read error %d from device: %p register: %#x!\n", ret,
43*c83c436dSSimon Glass dev, reg);
44151b223bSSimon Glass return -EIO;
45151b223bSSimon Glass }
46151b223bSSimon Glass
47151b223bSSimon Glass return 0;
48151b223bSSimon Glass }
49151b223bSSimon Glass
tps65090_bind(struct udevice * dev)50151b223bSSimon Glass static int tps65090_bind(struct udevice *dev)
51151b223bSSimon Glass {
527a869e6cSSimon Glass ofnode regulators_node;
53151b223bSSimon Glass int children;
54151b223bSSimon Glass
557a869e6cSSimon Glass regulators_node = dev_read_subnode(dev, "regulators");
567a869e6cSSimon Glass if (!ofnode_valid(regulators_node)) {
57*c83c436dSSimon Glass debug("%s: %s regulators subnode not found!\n", __func__,
58151b223bSSimon Glass dev->name);
59151b223bSSimon Glass return -ENXIO;
60151b223bSSimon Glass }
61151b223bSSimon Glass
62151b223bSSimon Glass debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
63151b223bSSimon Glass
64151b223bSSimon Glass children = pmic_bind_children(dev, regulators_node, pmic_children_info);
65151b223bSSimon Glass if (!children)
66151b223bSSimon Glass debug("%s: %s - no child found\n", __func__, dev->name);
67151b223bSSimon Glass
68151b223bSSimon Glass /* Always return success for this device */
69151b223bSSimon Glass return 0;
70151b223bSSimon Glass }
71151b223bSSimon Glass
72151b223bSSimon Glass static struct dm_pmic_ops tps65090_ops = {
73151b223bSSimon Glass .reg_count = tps65090_reg_count,
74151b223bSSimon Glass .read = tps65090_read,
75151b223bSSimon Glass .write = tps65090_write,
76151b223bSSimon Glass };
77151b223bSSimon Glass
78151b223bSSimon Glass static const struct udevice_id tps65090_ids[] = {
79151b223bSSimon Glass { .compatible = "ti,tps65090" },
80151b223bSSimon Glass { }
81151b223bSSimon Glass };
82151b223bSSimon Glass
83151b223bSSimon Glass U_BOOT_DRIVER(pmic_tps65090) = {
84151b223bSSimon Glass .name = "tps65090 pmic",
85151b223bSSimon Glass .id = UCLASS_PMIC,
86151b223bSSimon Glass .of_match = tps65090_ids,
87151b223bSSimon Glass .bind = tps65090_bind,
88151b223bSSimon Glass .ops = &tps65090_ops,
89151b223bSSimon Glass };
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