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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* LEDs triggers for power supply class
*
* Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
* Copyright © 2004 Szabolcs Gyurko
* Copyright © 2003 Ian Molton <spyro@f2s.com>
*
* Modified: 2004, Oct Szabolcs Gyurko
*
* You may use this code as per GPL version 2
*/
#include <linux/kernel.h>
#include <linux/power_supply.h>
#include "power_supply.h"
/* Battery specific LEDs triggers. */
static void power_supply_update_bat_leds(struct power_supply *psy)
{
union power_supply_propval status;
if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
return;
dev_dbg(psy->dev, "%s %d\n", __func__, status.intval);
switch (status.intval) {
case POWER_SUPPLY_STATUS_FULL:
led_trigger_event(psy->charging_full_trig, LED_FULL);
led_trigger_event(psy->charging_trig, LED_OFF);
led_trigger_event(psy->full_trig, LED_FULL);
break;
case POWER_SUPPLY_STATUS_CHARGING:
led_trigger_event(psy->charging_full_trig, LED_FULL);
led_trigger_event(psy->charging_trig, LED_FULL);
led_trigger_event(psy->full_trig, LED_OFF);
break;
default:
led_trigger_event(psy->charging_full_trig, LED_OFF);
led_trigger_event(psy->charging_trig, LED_OFF);
led_trigger_event(psy->full_trig, LED_OFF);
break;
}
}
static int power_supply_create_bat_triggers(struct power_supply *psy)
{
int rc = 0;
psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
"%s-charging-or-full", psy->name);
if (!psy->charging_full_trig_name)
goto charging_full_failed;
psy->charging_trig_name = kasprintf(GFP_KERNEL,
"%s-charging", psy->name);
if (!psy->charging_trig_name)
goto charging_failed;
psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name);
if (!psy->full_trig_name)
goto full_failed;
led_trigger_register_simple(psy->charging_full_trig_name,
&psy->charging_full_trig);
led_trigger_register_simple(psy->charging_trig_name,
&psy->charging_trig);
led_trigger_register_simple(psy->full_trig_name,
&psy->full_trig);
goto success;
full_failed:
kfree(psy->charging_trig_name);
charging_failed:
kfree(psy->charging_full_trig_name);
charging_full_failed:
rc = -ENOMEM;
success:
return rc;
}
static void power_supply_remove_bat_triggers(struct power_supply *psy)
{
led_trigger_unregister_simple(psy->charging_full_trig);
led_trigger_unregister_simple(psy->charging_trig);
led_trigger_unregister_simple(psy->full_trig);
kfree(psy->full_trig_name);
kfree(psy->charging_trig_name);
kfree(psy->charging_full_trig_name);
}
/* Generated power specific LEDs triggers. */
static void power_supply_update_gen_leds(struct power_supply *psy)
{
union power_supply_propval online;
if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
return;
dev_dbg(psy->dev, "%s %d\n", __func__, online.intval);
if (online.intval)
led_trigger_event(psy->online_trig, LED_FULL);
else
led_trigger_event(psy->online_trig, LED_OFF);
}
static int power_supply_create_gen_triggers(struct power_supply *psy)
{
int rc = 0;
psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name);
if (!psy->online_trig_name)
goto online_failed;
led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
goto success;
online_failed:
rc = -ENOMEM;
success:
return rc;
}
static void power_supply_remove_gen_triggers(struct power_supply *psy)
{
led_trigger_unregister_simple(psy->online_trig);
kfree(psy->online_trig_name);
}
/* Choice what triggers to create&update. */
void power_supply_update_leds(struct power_supply *psy)
{
if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
power_supply_update_bat_leds(psy);
else
power_supply_update_gen_leds(psy);
}
int power_supply_create_triggers(struct power_supply *psy)
{
if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
return power_supply_create_bat_triggers(psy);
return power_supply_create_gen_triggers(psy);
}
void power_supply_remove_triggers(struct power_supply *psy)
{
if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
power_supply_remove_bat_triggers(psy);
else
power_supply_remove_gen_triggers(psy);
}
|
