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
|
/* Copyright 2016 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "console.h"
#include "device_state.h"
#include "hooks.h"
static int enabled = 1;
int device_get_state(enum device_type device)
{
return device_states[device].state;
}
void device_set_state(enum device_type device, enum device_state state)
{
if (device_states[device].state == state)
return;
device_states[device].state = state;
}
static void check_device_state(void)
{
int i;
if (!enabled)
return;
for (i = 0; i < DEVICE_COUNT; i++)
board_update_device_state(i);
}
DECLARE_HOOK(HOOK_SECOND, check_device_state, HOOK_PRIO_DEFAULT);
static int device_has_interrupts(enum device_type device)
{
return (device_states[device].deferred &&
device_states[device].detect_on != GPIO_COUNT &&
device_states[device].detect_off != GPIO_COUNT);
}
static void disable_interrupts(enum device_type device)
{
if (!device_has_interrupts(device))
return;
/* Cancel any deferred callbacks */
hook_call_deferred(device_states[device].deferred, -1);
/* Disable gpio interrupts */
gpio_disable_interrupt(device_states[device].detect_on);
gpio_disable_interrupt(device_states[device].detect_off);
}
static void enable_interrupts(enum device_type device)
{
if (!device_has_interrupts(device))
return;
/* Enable gpio interrupts */
gpio_enable_interrupt(device_states[device].detect_on);
gpio_enable_interrupt(device_states[device].detect_off);
}
void device_detect_state_enable(int enable)
{
int i;
enabled = enable;
for (i = 0; i < DEVICE_COUNT; i++) {
if (enabled) {
enable_interrupts(i);
board_update_device_state(i);
} else {
disable_interrupts(i);
device_set_state(i, DEVICE_STATE_UNKNOWN);
}
}
}
static void print_state(const char *name, enum device_state state)
{
ccprintf("%-9s %s\n", name, state == DEVICE_STATE_ON ? "on" :
state == DEVICE_STATE_OFF ? "off" : "unknown");
}
static int command_devices(int argc, char **argv)
{
int i;
if (!enabled)
ccprintf("Device monitoring disabled\n");
else
for (i = 0; i < DEVICE_COUNT; i++)
print_state(device_states[i].name,
device_states[i].state);
return EC_SUCCESS;
}
DECLARE_CONSOLE_COMMAND(devices, command_devices,
"",
"Get the device states",
NULL);
|
