1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/*
* (C) Copyright 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <rtc.h>
int dm_rtc_get(struct udevice *dev, struct rtc_time *time)
{
struct rtc_ops *ops = rtc_get_ops(dev);
assert(ops);
if (!ops->get)
return -ENOSYS;
return ops->get(dev, time);
}
int dm_rtc_set(struct udevice *dev, struct rtc_time *time)
{
struct rtc_ops *ops = rtc_get_ops(dev);
assert(ops);
if (!ops->set)
return -ENOSYS;
return ops->set(dev, time);
}
int dm_rtc_reset(struct udevice *dev)
{
struct rtc_ops *ops = rtc_get_ops(dev);
assert(ops);
if (!ops->reset)
return -ENOSYS;
return ops->reset(dev);
}
int rtc_read8(struct udevice *dev, unsigned int reg)
{
struct rtc_ops *ops = rtc_get_ops(dev);
assert(ops);
if (!ops->read8)
return -ENOSYS;
return ops->read8(dev, reg);
}
int rtc_write8(struct udevice *dev, unsigned int reg, int val)
{
struct rtc_ops *ops = rtc_get_ops(dev);
assert(ops);
if (!ops->write8)
return -ENOSYS;
return ops->write8(dev, reg, val);
}
int rtc_read32(struct udevice *dev, unsigned int reg, u32 *valuep)
{
u32 value = 0;
int ret;
int i;
for (i = 0; i < sizeof(value); i++) {
ret = rtc_read8(dev, reg + i);
if (ret < 0)
return ret;
value |= ret << (i << 3);
}
*valuep = value;
return 0;
}
int rtc_write32(struct udevice *dev, unsigned int reg, u32 value)
{
int i, ret;
for (i = 0; i < sizeof(value); i++) {
ret = rtc_write8(dev, reg + i, (value >> (i << 3)) & 0xff);
if (ret)
return ret;
}
return 0;
}
UCLASS_DRIVER(rtc) = {
.name = "rtc",
.id = UCLASS_RTC,
};
|
