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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
* Copyright (c) 2015 Intel Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _RTC_H_
#define _RTC_H_
#include <stdint.h>
#include <device.h>
#include <misc/util.h>
#ifdef __cplusplus
extern "C" {
#endif
enum clk_rtc_div {
RTC_CLK_DIV_1,
RTC_CLK_DIV_2,
RTC_CLK_DIV_4,
RTC_CLK_DIV_8,
RTC_CLK_DIV_16,
RTC_CLK_DIV_32,
RTC_CLK_DIV_64,
RTC_CLK_DIV_128,
RTC_CLK_DIV_256,
RTC_CLK_DIV_512,
RTC_CLK_DIV_1024,
RTC_CLK_DIV_2048,
RTC_CLK_DIV_4096,
RTC_CLK_DIV_8192,
RTC_CLK_DIV_16384,
RTC_CLK_DIV_32768
};
#define RTC_DIVIDER RTC_CLK_DIV_1
/** Number of RTC ticks in a second */
#define RTC_ALARM_SECOND (32768 / (1UL << RTC_DIVIDER))
/** Number of RTC ticks in a minute */
#define RTC_ALARM_MINUTE (RTC_ALARM_SECOND * 60)
/** Number of RTC ticks in an hour */
#define RTC_ALARM_HOUR (RTC_ALARM_MINUTE * 60)
/** Number of RTC ticks in a day */
#define RTC_ALARM_DAY (RTC_ALARM_HOUR * 24)
struct rtc_config {
uint32_t init_val;
/*!< enable/disable alarm */
uint8_t alarm_enable;
/*!< initial configuration value for the 32bit RTC alarm value */
uint32_t alarm_val;
/*!< Pointer to function to call when alarm value
* matches current RTC value */
void (*cb_fn)(struct device *dev);
};
typedef void (*rtc_api_enable)(struct device *dev);
typedef void (*rtc_api_disable)(struct device *dev);
typedef int (*rtc_api_set_config)(struct device *dev,
struct rtc_config *config);
typedef int (*rtc_api_set_alarm)(struct device *dev,
const uint32_t alarm_val);
typedef uint32_t (*rtc_api_read)(struct device *dev);
struct rtc_driver_api {
rtc_api_enable enable;
rtc_api_disable disable;
rtc_api_read read;
rtc_api_set_config set_config;
rtc_api_set_alarm set_alarm;
};
static inline uint32_t rtc_read(struct device *dev)
{
const struct rtc_driver_api *api = dev->driver_api;
return api->read(dev);
}
static inline void rtc_enable(struct device *dev)
{
const struct rtc_driver_api *api = dev->driver_api;
api->enable(dev);
}
static inline void rtc_disable(struct device *dev)
{
const struct rtc_driver_api *api = dev->driver_api;
api->disable(dev);
}
static inline int rtc_set_config(struct device *dev,
struct rtc_config *cfg)
{
const struct rtc_driver_api *api = dev->driver_api;
return api->set_config(dev, cfg);
}
static inline int rtc_set_alarm(struct device *dev,
const uint32_t alarm_val)
{
const struct rtc_driver_api *api = dev->driver_api;
return api->set_alarm(dev, alarm_val);
}
#ifdef __cplusplus
}
#endif
#endif
|
