]> git.sur5r.net Git - u-boot/blob - drivers/power/pmic/palmas.c
Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR
[u-boot] / drivers / power / pmic / palmas.c
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/palmas.h>
16 #include <dm/device.h>
17
18 static const struct pmic_child_info pmic_children_info[] = {
19         { .prefix = "ldo", .driver = PALMAS_LDO_DRIVER },
20         { .prefix = "smps", .driver = PALMAS_SMPS_DRIVER },
21         { },
22 };
23
24 static int palmas_write(struct udevice *dev, uint reg, const uint8_t *buff,
25                           int len)
26 {
27         if (dm_i2c_write(dev, reg, buff, len)) {
28                 pr_err("write error to device: %p register: %#x!", dev, reg);
29                 return -EIO;
30         }
31
32         return 0;
33 }
34
35 static int palmas_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
36 {
37         if (dm_i2c_read(dev, reg, buff, len)) {
38                 pr_err("read error from device: %p register: %#x!", dev, reg);
39                 return -EIO;
40         }
41
42         return 0;
43 }
44
45 static int palmas_bind(struct udevice *dev)
46 {
47         ofnode pmic_node = ofnode_null(), regulators_node;
48         ofnode subnode;
49         int children;
50
51         dev_for_each_subnode(subnode, dev) {
52                 const char *name;
53                 char *temp;
54
55                 name = ofnode_get_name(subnode);
56                 temp = strstr(name, "pmic");
57                 if (temp) {
58                         pmic_node = subnode;
59                         break;
60                 }
61         }
62
63         if (!ofnode_valid(pmic_node)) {
64                 debug("%s: %s pmic subnode not found!", __func__, dev->name);
65                 return -ENXIO;
66         }
67
68         regulators_node = ofnode_find_subnode(pmic_node, "regulators");
69
70         if (!ofnode_valid(regulators_node)) {
71                 debug("%s: %s reg subnode not found!", __func__, dev->name);
72                 return -ENXIO;
73         }
74
75         children = pmic_bind_children(dev, regulators_node, pmic_children_info);
76         if (!children)
77                 debug("%s: %s - no child found\n", __func__, dev->name);
78
79         /* Always return success for this device */
80         return 0;
81 }
82
83 static struct dm_pmic_ops palmas_ops = {
84         .read = palmas_read,
85         .write = palmas_write,
86 };
87
88 static const struct udevice_id palmas_ids[] = {
89         { .compatible = "ti,tps659038", .data = TPS659038 },
90         { .compatible = "ti,tps65917" , .data = TPS65917 },
91         { }
92 };
93
94 U_BOOT_DRIVER(pmic_palmas) = {
95         .name = "palmas_pmic",
96         .id = UCLASS_PMIC,
97         .of_match = palmas_ids,
98         .bind = palmas_bind,
99         .ops = &palmas_ops,
100 };