Commit | Line | Data |
---|---|---|
4a11b59d AV |
1 | /* |
2 | * LEDs triggers for power supply class | |
3 | * | |
4 | * Copyright © 2007 Anton Vorontsov <cbou@mail.ru> | |
5 | * Copyright © 2004 Szabolcs Gyurko | |
6 | * Copyright © 2003 Ian Molton <spyro@f2s.com> | |
7 | * | |
8 | * Modified: 2004, Oct Szabolcs Gyurko | |
9 | * | |
10 | * You may use this code as per GPL version 2 | |
11 | */ | |
12 | ||
4d24473c | 13 | #include <linux/kernel.h> |
4a11b59d | 14 | #include <linux/power_supply.h> |
5a0e3ad6 | 15 | #include <linux/slab.h> |
4a11b59d | 16 | |
25f12141 AB |
17 | #include "power_supply.h" |
18 | ||
4a11b59d AV |
19 | /* Battery specific LEDs triggers. */ |
20 | ||
21 | static void power_supply_update_bat_leds(struct power_supply *psy) | |
22 | { | |
23 | union power_supply_propval status; | |
24 | ||
25 | if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status)) | |
26 | return; | |
27 | ||
0cddc0a9 | 28 | dev_dbg(psy->dev, "%s %d\n", __func__, status.intval); |
4a11b59d AV |
29 | |
30 | switch (status.intval) { | |
31 | case POWER_SUPPLY_STATUS_FULL: | |
32 | led_trigger_event(psy->charging_full_trig, LED_FULL); | |
33 | led_trigger_event(psy->charging_trig, LED_OFF); | |
34 | led_trigger_event(psy->full_trig, LED_FULL); | |
35 | break; | |
36 | case POWER_SUPPLY_STATUS_CHARGING: | |
37 | led_trigger_event(psy->charging_full_trig, LED_FULL); | |
38 | led_trigger_event(psy->charging_trig, LED_FULL); | |
39 | led_trigger_event(psy->full_trig, LED_OFF); | |
40 | break; | |
41 | default: | |
42 | led_trigger_event(psy->charging_full_trig, LED_OFF); | |
43 | led_trigger_event(psy->charging_trig, LED_OFF); | |
44 | led_trigger_event(psy->full_trig, LED_OFF); | |
45 | break; | |
46 | } | |
4a11b59d AV |
47 | } |
48 | ||
49 | static int power_supply_create_bat_triggers(struct power_supply *psy) | |
50 | { | |
51 | int rc = 0; | |
52 | ||
4d24473c AM |
53 | psy->charging_full_trig_name = kasprintf(GFP_KERNEL, |
54 | "%s-charging-or-full", psy->name); | |
4a11b59d AV |
55 | if (!psy->charging_full_trig_name) |
56 | goto charging_full_failed; | |
57 | ||
4d24473c AM |
58 | psy->charging_trig_name = kasprintf(GFP_KERNEL, |
59 | "%s-charging", psy->name); | |
4a11b59d AV |
60 | if (!psy->charging_trig_name) |
61 | goto charging_failed; | |
62 | ||
4d24473c | 63 | psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name); |
4a11b59d AV |
64 | if (!psy->full_trig_name) |
65 | goto full_failed; | |
66 | ||
4a11b59d AV |
67 | led_trigger_register_simple(psy->charging_full_trig_name, |
68 | &psy->charging_full_trig); | |
69 | led_trigger_register_simple(psy->charging_trig_name, | |
70 | &psy->charging_trig); | |
71 | led_trigger_register_simple(psy->full_trig_name, | |
72 | &psy->full_trig); | |
73 | ||
74 | goto success; | |
75 | ||
76 | full_failed: | |
77 | kfree(psy->charging_trig_name); | |
78 | charging_failed: | |
79 | kfree(psy->charging_full_trig_name); | |
80 | charging_full_failed: | |
81 | rc = -ENOMEM; | |
82 | success: | |
83 | return rc; | |
84 | } | |
85 | ||
86 | static void power_supply_remove_bat_triggers(struct power_supply *psy) | |
87 | { | |
88 | led_trigger_unregister_simple(psy->charging_full_trig); | |
89 | led_trigger_unregister_simple(psy->charging_trig); | |
90 | led_trigger_unregister_simple(psy->full_trig); | |
91 | kfree(psy->full_trig_name); | |
92 | kfree(psy->charging_trig_name); | |
93 | kfree(psy->charging_full_trig_name); | |
4a11b59d AV |
94 | } |
95 | ||
96 | /* Generated power specific LEDs triggers. */ | |
97 | ||
98 | static void power_supply_update_gen_leds(struct power_supply *psy) | |
99 | { | |
100 | union power_supply_propval online; | |
101 | ||
102 | if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online)) | |
103 | return; | |
104 | ||
0cddc0a9 | 105 | dev_dbg(psy->dev, "%s %d\n", __func__, online.intval); |
4a11b59d AV |
106 | |
107 | if (online.intval) | |
108 | led_trigger_event(psy->online_trig, LED_FULL); | |
109 | else | |
110 | led_trigger_event(psy->online_trig, LED_OFF); | |
4a11b59d AV |
111 | } |
112 | ||
113 | static int power_supply_create_gen_triggers(struct power_supply *psy) | |
114 | { | |
115 | int rc = 0; | |
116 | ||
4d24473c | 117 | psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name); |
4a11b59d AV |
118 | if (!psy->online_trig_name) |
119 | goto online_failed; | |
120 | ||
4a11b59d AV |
121 | led_trigger_register_simple(psy->online_trig_name, &psy->online_trig); |
122 | ||
123 | goto success; | |
124 | ||
125 | online_failed: | |
126 | rc = -ENOMEM; | |
127 | success: | |
128 | return rc; | |
129 | } | |
130 | ||
131 | static void power_supply_remove_gen_triggers(struct power_supply *psy) | |
132 | { | |
133 | led_trigger_unregister_simple(psy->online_trig); | |
134 | kfree(psy->online_trig_name); | |
4a11b59d AV |
135 | } |
136 | ||
137 | /* Choice what triggers to create&update. */ | |
138 | ||
139 | void power_supply_update_leds(struct power_supply *psy) | |
140 | { | |
141 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
142 | power_supply_update_bat_leds(psy); | |
143 | else | |
144 | power_supply_update_gen_leds(psy); | |
4a11b59d AV |
145 | } |
146 | ||
147 | int power_supply_create_triggers(struct power_supply *psy) | |
148 | { | |
149 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
150 | return power_supply_create_bat_triggers(psy); | |
151 | return power_supply_create_gen_triggers(psy); | |
152 | } | |
153 | ||
154 | void power_supply_remove_triggers(struct power_supply *psy) | |
155 | { | |
156 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
157 | power_supply_remove_bat_triggers(psy); | |
158 | else | |
159 | power_supply_remove_gen_triggers(psy); | |
4a11b59d | 160 | } |