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Diffstat (limited to 'drivers/power/pmic/lp87565.c')
-rw-r--r--drivers/power/pmic/lp87565.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/power/pmic/lp87565.c b/drivers/power/pmic/lp87565.c
new file mode 100644
index 0000000000..a5f29d7760
--- /dev/null
+++ b/drivers/power/pmic/lp87565.c
@@ -0,0 +1,89 @@
1/*
2 * (C) Copyright 2017 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/lp87565.h>
16#include <dm/device.h>
17
18DECLARE_GLOBAL_DATA_PTR;
19
20static const struct pmic_child_info pmic_children_info[] = {
21 { .prefix = "buck", .driver = LP87565_BUCK_DRIVER },
22 { },
23};
24
25static int lp87565_write(struct udevice *dev, uint reg, const uint8_t *buff,
26 int len)
27{
28 int ret;
29
30 ret = dm_i2c_write(dev, reg, buff, len);
31 if (ret)
32 error("write error to device: %p register: %#x!", dev, reg);
33
34 return ret;
35}
36
37static int lp87565_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
38{
39 int ret;
40
41 ret = dm_i2c_read(dev, reg, buff, len);
42 if (ret)
43 error("read error from device: %p register: %#x!", dev, reg);
44
45 return ret;
46}
47
48static int lp87565_bind(struct udevice *dev)
49{
50 int regulators_node;
51 const void *blob = gd->fdt_blob;
52 int children;
53 int node = dev->of_offset;
54
55 regulators_node = fdt_subnode_offset(blob, node, "regulators");
56 if (regulators_node <= 0) {
57 debug("%s: %s regulators subnode not found!", __func__,
58 dev->name);
59 return -ENXIO;
60 }
61
62 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
63
64 children = pmic_bind_children(dev, regulators_node, pmic_children_info);
65 if (!children)
66 printf("%s: %s - no child found\n", __func__, dev->name);
67
68 /* Always return success for this device */
69 return 0;
70}
71
72static struct dm_pmic_ops lp87565_ops = {
73 .read = lp87565_read,
74 .write = lp87565_write,
75};
76
77static const struct udevice_id lp87565_ids[] = {
78 { .compatible = "ti,lp87565", .data = LP87565 },
79 { .compatible = "ti,lp87565-q1", .data = LP87565_Q1 },
80 { }
81};
82
83U_BOOT_DRIVER(pmic_lp87565) = {
84 .name = "lp87565_pmic",
85 .id = UCLASS_PMIC,
86 .of_match = lp87565_ids,
87 .bind = lp87565_bind,
88 .ops = &lp87565_ops,
89};