1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
2854dfbf9SFelix Brack /*
3854dfbf9SFelix Brack * Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch>
4854dfbf9SFelix Brack */
5854dfbf9SFelix Brack
6854dfbf9SFelix Brack #include <common.h>
7854dfbf9SFelix Brack #include <dm.h>
8854dfbf9SFelix Brack #include <i2c.h>
9854dfbf9SFelix Brack #include <power/pmic.h>
10854dfbf9SFelix Brack #include <power/regulator.h>
11854dfbf9SFelix Brack #include <power/tps65910_pmic.h>
12854dfbf9SFelix Brack
13854dfbf9SFelix Brack static const struct pmic_child_info pmic_children_info[] = {
14854dfbf9SFelix Brack { .prefix = "ldo_", .driver = TPS65910_LDO_DRIVER },
15854dfbf9SFelix Brack { .prefix = "buck_", .driver = TPS65910_BUCK_DRIVER },
16854dfbf9SFelix Brack { .prefix = "boost_", .driver = TPS65910_BOOST_DRIVER },
17854dfbf9SFelix Brack { },
18854dfbf9SFelix Brack };
19854dfbf9SFelix Brack
pmic_tps65910_reg_count(struct udevice * dev)20854dfbf9SFelix Brack static int pmic_tps65910_reg_count(struct udevice *dev)
21854dfbf9SFelix Brack {
22854dfbf9SFelix Brack return TPS65910_NUM_REGS;
23854dfbf9SFelix Brack }
24854dfbf9SFelix Brack
pmic_tps65910_write(struct udevice * dev,uint reg,const u8 * buffer,int len)25854dfbf9SFelix Brack static int pmic_tps65910_write(struct udevice *dev, uint reg, const u8 *buffer,
26854dfbf9SFelix Brack int len)
27854dfbf9SFelix Brack {
28854dfbf9SFelix Brack int ret;
29854dfbf9SFelix Brack
30854dfbf9SFelix Brack ret = dm_i2c_write(dev, reg, buffer, len);
31854dfbf9SFelix Brack if (ret)
3246caea7fSFelix Brack pr_err("%s write error on register %02x\n", dev->name, reg);
33854dfbf9SFelix Brack
34854dfbf9SFelix Brack return ret;
35854dfbf9SFelix Brack }
36854dfbf9SFelix Brack
pmic_tps65910_read(struct udevice * dev,uint reg,u8 * buffer,int len)37854dfbf9SFelix Brack static int pmic_tps65910_read(struct udevice *dev, uint reg, u8 *buffer,
38854dfbf9SFelix Brack int len)
39854dfbf9SFelix Brack {
40854dfbf9SFelix Brack int ret;
41854dfbf9SFelix Brack
42854dfbf9SFelix Brack ret = dm_i2c_read(dev, reg, buffer, len);
43854dfbf9SFelix Brack if (ret)
4446caea7fSFelix Brack pr_err("%s read error on register %02x\n", dev->name, reg);
45854dfbf9SFelix Brack
46854dfbf9SFelix Brack return ret;
47854dfbf9SFelix Brack }
48854dfbf9SFelix Brack
pmic_tps65910_bind(struct udevice * dev)49854dfbf9SFelix Brack static int pmic_tps65910_bind(struct udevice *dev)
50854dfbf9SFelix Brack {
51854dfbf9SFelix Brack ofnode regulators_node;
52854dfbf9SFelix Brack int children;
53854dfbf9SFelix Brack
54854dfbf9SFelix Brack regulators_node = dev_read_subnode(dev, "regulators");
55854dfbf9SFelix Brack if (!ofnode_valid(regulators_node)) {
56854dfbf9SFelix Brack debug("%s regulators subnode not found\n", dev->name);
57854dfbf9SFelix Brack return -EINVAL;
58854dfbf9SFelix Brack }
59854dfbf9SFelix Brack
60854dfbf9SFelix Brack children = pmic_bind_children(dev, regulators_node, pmic_children_info);
61854dfbf9SFelix Brack if (!children)
62854dfbf9SFelix Brack debug("%s has no children (regulators)\n", dev->name);
63854dfbf9SFelix Brack
64854dfbf9SFelix Brack return 0;
65854dfbf9SFelix Brack }
66854dfbf9SFelix Brack
pmic_tps65910_probe(struct udevice * dev)67854dfbf9SFelix Brack static int pmic_tps65910_probe(struct udevice *dev)
68854dfbf9SFelix Brack {
69854dfbf9SFelix Brack /* use I2C control interface instead of I2C smartreflex interface to
70854dfbf9SFelix Brack * access smartrefelex registers VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG
71854dfbf9SFelix Brack * and VDD2_SR_REG
72854dfbf9SFelix Brack */
73854dfbf9SFelix Brack return pmic_clrsetbits(dev, TPS65910_REG_DEVICE_CTRL, 0,
74854dfbf9SFelix Brack TPS65910_I2C_SEL_MASK);
75854dfbf9SFelix Brack }
76854dfbf9SFelix Brack
77854dfbf9SFelix Brack static struct dm_pmic_ops pmic_tps65910_ops = {
78854dfbf9SFelix Brack .reg_count = pmic_tps65910_reg_count,
79854dfbf9SFelix Brack .read = pmic_tps65910_read,
80854dfbf9SFelix Brack .write = pmic_tps65910_write,
81854dfbf9SFelix Brack };
82854dfbf9SFelix Brack
83854dfbf9SFelix Brack static const struct udevice_id pmic_tps65910_match[] = {
84854dfbf9SFelix Brack { .compatible = "ti,tps65910" },
85854dfbf9SFelix Brack { /* sentinel */ }
86854dfbf9SFelix Brack };
87854dfbf9SFelix Brack
88854dfbf9SFelix Brack U_BOOT_DRIVER(pmic_tps65910) = {
89854dfbf9SFelix Brack .name = "pmic_tps65910",
90854dfbf9SFelix Brack .id = UCLASS_PMIC,
91854dfbf9SFelix Brack .of_match = pmic_tps65910_match,
92854dfbf9SFelix Brack .bind = pmic_tps65910_bind,
93854dfbf9SFelix Brack .probe = pmic_tps65910_probe,
94854dfbf9SFelix Brack .ops = &pmic_tps65910_ops,
95854dfbf9SFelix Brack };
96