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1 | /* |
2 | * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com> | |
3 | * Keerthy <j-keerthy@ti.com> | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | #include <fdtdec.h> | |
10 | #include <errno.h> | |
11 | #include <dm.h> | |
12 | #include <i2c.h> | |
13 | #include <power/pmic.h> | |
14 | #include <power/regulator.h> | |
15 | #include <power/lp873x.h> | |
16 | #include <dm/device.h> | |
17 | ||
18 | DECLARE_GLOBAL_DATA_PTR; | |
19 | ||
20 | static const struct pmic_child_info pmic_children_info[] = { | |
21 | { .prefix = "ldo", .driver = LP873X_LDO_DRIVER }, | |
22 | { .prefix = "buck", .driver = LP873X_BUCK_DRIVER }, | |
23 | { }, | |
24 | }; | |
25 | ||
26 | static int lp873x_write(struct udevice *dev, uint reg, const uint8_t *buff, | |
27 | int len) | |
28 | { | |
29 | if (dm_i2c_write(dev, reg, buff, len)) { | |
9b643e31 | 30 | pr_err("write error to device: %p register: %#x!", dev, reg); |
ca1de0b5 K |
31 | return -EIO; |
32 | } | |
33 | ||
34 | return 0; | |
35 | } | |
36 | ||
37 | static int lp873x_read(struct udevice *dev, uint reg, uint8_t *buff, int len) | |
38 | { | |
39 | if (dm_i2c_read(dev, reg, buff, len)) { | |
9b643e31 | 40 | pr_err("read error from device: %p register: %#x!", dev, reg); |
ca1de0b5 K |
41 | return -EIO; |
42 | } | |
43 | ||
44 | return 0; | |
45 | } | |
46 | ||
47 | static int lp873x_bind(struct udevice *dev) | |
48 | { | |
7a869e6c | 49 | ofnode regulators_node; |
ca1de0b5 | 50 | int children; |
ca1de0b5 | 51 | |
7a869e6c SG |
52 | regulators_node = dev_read_subnode(dev, "regulators"); |
53 | if (!ofnode_valid(regulators_node)) { | |
54 | debug("%s: %s regulators subnode not found!", __func__, | |
55 | dev->name); | |
ca1de0b5 K |
56 | return -ENXIO; |
57 | } | |
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 | ||
67 | static struct dm_pmic_ops lp873x_ops = { | |
68 | .read = lp873x_read, | |
69 | .write = lp873x_write, | |
70 | }; | |
71 | ||
72 | static const struct udevice_id lp873x_ids[] = { | |
73 | { .compatible = "ti,lp8732", .data = LP8732 }, | |
74 | { .compatible = "ti,lp8733" , .data = LP8733 }, | |
75 | { } | |
76 | }; | |
77 | ||
78 | U_BOOT_DRIVER(pmic_lp873x) = { | |
79 | .name = "lp873x_pmic", | |
80 | .id = UCLASS_PMIC, | |
81 | .of_match = lp873x_ids, | |
82 | .bind = lp873x_bind, | |
83 | .ops = &lp873x_ops, | |
84 | }; |