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12#include <linux/kernel.h>
13#include <linux/device.h>
14#include <linux/power_supply.h>
15#include <linux/slab.h>
16
17#include "power_supply.h"
18
19
20
21static void power_supply_update_bat_leds(struct power_supply *psy)
22{
23 union power_supply_propval status;
24 unsigned long delay_on = 0;
25 unsigned long delay_off = 0;
26
27 if (power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
28 return;
29
30 dev_dbg(&psy->dev, "%s %d\n", __func__, status.intval);
31
32 switch (status.intval) {
33 case POWER_SUPPLY_STATUS_FULL:
34 led_trigger_event(psy->charging_full_trig, LED_FULL);
35 led_trigger_event(psy->charging_trig, LED_OFF);
36 led_trigger_event(psy->full_trig, LED_FULL);
37 led_trigger_event(psy->charging_blink_full_solid_trig,
38 LED_FULL);
39 break;
40 case POWER_SUPPLY_STATUS_CHARGING:
41 led_trigger_event(psy->charging_full_trig, LED_FULL);
42 led_trigger_event(psy->charging_trig, LED_FULL);
43 led_trigger_event(psy->full_trig, LED_OFF);
44 led_trigger_blink(psy->charging_blink_full_solid_trig,
45 &delay_on, &delay_off);
46 break;
47 default:
48 led_trigger_event(psy->charging_full_trig, LED_OFF);
49 led_trigger_event(psy->charging_trig, LED_OFF);
50 led_trigger_event(psy->full_trig, LED_OFF);
51 led_trigger_event(psy->charging_blink_full_solid_trig,
52 LED_OFF);
53 break;
54 }
55}
56
57static int power_supply_create_bat_triggers(struct power_supply *psy)
58{
59 psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
60 "%s-charging-or-full", psy->desc->name);
61 if (!psy->charging_full_trig_name)
62 goto charging_full_failed;
63
64 psy->charging_trig_name = kasprintf(GFP_KERNEL,
65 "%s-charging", psy->desc->name);
66 if (!psy->charging_trig_name)
67 goto charging_failed;
68
69 psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->desc->name);
70 if (!psy->full_trig_name)
71 goto full_failed;
72
73 psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL,
74 "%s-charging-blink-full-solid", psy->desc->name);
75 if (!psy->charging_blink_full_solid_trig_name)
76 goto charging_blink_full_solid_failed;
77
78 led_trigger_register_simple(psy->charging_full_trig_name,
79 &psy->charging_full_trig);
80 led_trigger_register_simple(psy->charging_trig_name,
81 &psy->charging_trig);
82 led_trigger_register_simple(psy->full_trig_name,
83 &psy->full_trig);
84 led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
85 &psy->charging_blink_full_solid_trig);
86
87 return 0;
88
89charging_blink_full_solid_failed:
90 kfree(psy->full_trig_name);
91full_failed:
92 kfree(psy->charging_trig_name);
93charging_failed:
94 kfree(psy->charging_full_trig_name);
95charging_full_failed:
96 return -ENOMEM;
97}
98
99static void power_supply_remove_bat_triggers(struct power_supply *psy)
100{
101 led_trigger_unregister_simple(psy->charging_full_trig);
102 led_trigger_unregister_simple(psy->charging_trig);
103 led_trigger_unregister_simple(psy->full_trig);
104 led_trigger_unregister_simple(psy->charging_blink_full_solid_trig);
105 kfree(psy->charging_blink_full_solid_trig_name);
106 kfree(psy->full_trig_name);
107 kfree(psy->charging_trig_name);
108 kfree(psy->charging_full_trig_name);
109}
110
111
112
113static void power_supply_update_gen_leds(struct power_supply *psy)
114{
115 union power_supply_propval online;
116
117 if (power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
118 return;
119
120 dev_dbg(&psy->dev, "%s %d\n", __func__, online.intval);
121
122 if (online.intval)
123 led_trigger_event(psy->online_trig, LED_FULL);
124 else
125 led_trigger_event(psy->online_trig, LED_OFF);
126}
127
128static int power_supply_create_gen_triggers(struct power_supply *psy)
129{
130 psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online",
131 psy->desc->name);
132 if (!psy->online_trig_name)
133 return -ENOMEM;
134
135 led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
136
137 return 0;
138}
139
140static void power_supply_remove_gen_triggers(struct power_supply *psy)
141{
142 led_trigger_unregister_simple(psy->online_trig);
143 kfree(psy->online_trig_name);
144}
145
146
147
148void power_supply_update_leds(struct power_supply *psy)
149{
150 if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY)
151 power_supply_update_bat_leds(psy);
152 else
153 power_supply_update_gen_leds(psy);
154}
155
156int power_supply_create_triggers(struct power_supply *psy)
157{
158 if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY)
159 return power_supply_create_bat_triggers(psy);
160 return power_supply_create_gen_triggers(psy);
161}
162
163void power_supply_remove_triggers(struct power_supply *psy)
164{
165 if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY)
166 power_supply_remove_bat_triggers(psy);
167 else
168 power_supply_remove_gen_triggers(psy);
169}
170
