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
|
/*
* (C) COPYRIGHT ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef MVE_CONFIG_H
#define MVE_CONFIG_H
#ifdef EMULATOR
#include "emulator_userspace.h"
#else
#include <linux/types.h>
#endif
/**
* This enum lists the possible keys that may be inserted into a key-value list.
*/
enum mve_config_key
{
/**
* Power management functions. The value associated with this key must be a
* reference to a struct mve_pm_callback_conf.
*/
MVE_CONFIG_DEVICE_ATTR_POWER_CALLBACKS,
/**
* Callback function to retrieve bus attributes. The value associated
* with this key must be a function pointer conforming to the prototype
* uint32_t (*)(int)
*/
MVE_CONFIG_DEVICE_ATTR_BUS_ATTRIBUTES,
/**
* Callback functions to support dynamic voltage and frequency scaling.
* Currently, this is used to enable/disable the clock and change the
* clock frequency. The implementation of these functions are assumed
* to take care of the voltage settings. The value associated with this
* key must be a reference to a struct mve_dvfs_callback_conf.
*/
MVE_CONFIG_DEVICE_ATTR_DVFS_CALLBACKS,
/**
* End of key-value pairs vector indicator. The configuration loader will stop
* processing any more elements when it encounters this key. Note that
* the key-value vector must be terminated with this key! The value
* associated with this key is ignored.
*/
MVE_CONFIG_DEVICE_ATTR_END
};
/**
* Type definition of the value type used in the key-value pairs structure.
*/
typedef uint32_t *mve_config_attribute_value;
/**
* Each element in the key-value pairs vector is stored in an instance of this
* structure.
*/
struct mve_config_attribute
{
enum mve_config_key key; /**< The key of the element */
mve_config_attribute_value value; /**< The value corresponding to the key
* above */
};
/**
* Returns the value associated with the first occurrence of the supplied key.
* The vector must be terminated by a MVE_CONFIG_DEVICE_ATTR_END key.
* @param attributes A vector containing key-value pairs.
* @param key The key to find the value for.
* @return The value if the key exists in the list. NULL if no such key exists.
*/
uint32_t *mve_config_get_value(struct mve_config_attribute *attributes,
enum mve_config_key key);
#endif /* MVE_CONFIG_H */
|
