Commit | Line | Data |
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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 | ||
13 | #include <linux/power_supply.h> | |
14 | ||
15 | /* Battery specific LEDs triggers. */ | |
16 | ||
17 | static void power_supply_update_bat_leds(struct power_supply *psy) | |
18 | { | |
19 | union power_supply_propval status; | |
20 | ||
21 | if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status)) | |
22 | return; | |
23 | ||
24 | dev_dbg(psy->dev, "%s %d\n", __FUNCTION__, status.intval); | |
25 | ||
26 | switch (status.intval) { | |
27 | case POWER_SUPPLY_STATUS_FULL: | |
28 | led_trigger_event(psy->charging_full_trig, LED_FULL); | |
29 | led_trigger_event(psy->charging_trig, LED_OFF); | |
30 | led_trigger_event(psy->full_trig, LED_FULL); | |
31 | break; | |
32 | case POWER_SUPPLY_STATUS_CHARGING: | |
33 | led_trigger_event(psy->charging_full_trig, LED_FULL); | |
34 | led_trigger_event(psy->charging_trig, LED_FULL); | |
35 | led_trigger_event(psy->full_trig, LED_OFF); | |
36 | break; | |
37 | default: | |
38 | led_trigger_event(psy->charging_full_trig, LED_OFF); | |
39 | led_trigger_event(psy->charging_trig, LED_OFF); | |
40 | led_trigger_event(psy->full_trig, LED_OFF); | |
41 | break; | |
42 | } | |
4a11b59d AV |
43 | } |
44 | ||
45 | static int power_supply_create_bat_triggers(struct power_supply *psy) | |
46 | { | |
47 | int rc = 0; | |
48 | ||
49 | psy->charging_full_trig_name = kmalloc(strlen(psy->name) + | |
50 | sizeof("-charging-or-full"), GFP_KERNEL); | |
51 | if (!psy->charging_full_trig_name) | |
52 | goto charging_full_failed; | |
53 | ||
54 | psy->charging_trig_name = kmalloc(strlen(psy->name) + | |
55 | sizeof("-charging"), GFP_KERNEL); | |
56 | if (!psy->charging_trig_name) | |
57 | goto charging_failed; | |
58 | ||
59 | psy->full_trig_name = kmalloc(strlen(psy->name) + | |
60 | sizeof("-full"), GFP_KERNEL); | |
61 | if (!psy->full_trig_name) | |
62 | goto full_failed; | |
63 | ||
64 | strcpy(psy->charging_full_trig_name, psy->name); | |
65 | strcat(psy->charging_full_trig_name, "-charging-or-full"); | |
66 | strcpy(psy->charging_trig_name, psy->name); | |
67 | strcat(psy->charging_trig_name, "-charging"); | |
68 | strcpy(psy->full_trig_name, psy->name); | |
69 | strcat(psy->full_trig_name, "-full"); | |
70 | ||
71 | led_trigger_register_simple(psy->charging_full_trig_name, | |
72 | &psy->charging_full_trig); | |
73 | led_trigger_register_simple(psy->charging_trig_name, | |
74 | &psy->charging_trig); | |
75 | led_trigger_register_simple(psy->full_trig_name, | |
76 | &psy->full_trig); | |
77 | ||
78 | goto success; | |
79 | ||
80 | full_failed: | |
81 | kfree(psy->charging_trig_name); | |
82 | charging_failed: | |
83 | kfree(psy->charging_full_trig_name); | |
84 | charging_full_failed: | |
85 | rc = -ENOMEM; | |
86 | success: | |
87 | return rc; | |
88 | } | |
89 | ||
90 | static void power_supply_remove_bat_triggers(struct power_supply *psy) | |
91 | { | |
92 | led_trigger_unregister_simple(psy->charging_full_trig); | |
93 | led_trigger_unregister_simple(psy->charging_trig); | |
94 | led_trigger_unregister_simple(psy->full_trig); | |
95 | kfree(psy->full_trig_name); | |
96 | kfree(psy->charging_trig_name); | |
97 | kfree(psy->charging_full_trig_name); | |
4a11b59d AV |
98 | } |
99 | ||
100 | /* Generated power specific LEDs triggers. */ | |
101 | ||
102 | static void power_supply_update_gen_leds(struct power_supply *psy) | |
103 | { | |
104 | union power_supply_propval online; | |
105 | ||
106 | if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online)) | |
107 | return; | |
108 | ||
109 | dev_dbg(psy->dev, "%s %d\n", __FUNCTION__, online.intval); | |
110 | ||
111 | if (online.intval) | |
112 | led_trigger_event(psy->online_trig, LED_FULL); | |
113 | else | |
114 | led_trigger_event(psy->online_trig, LED_OFF); | |
4a11b59d AV |
115 | } |
116 | ||
117 | static int power_supply_create_gen_triggers(struct power_supply *psy) | |
118 | { | |
119 | int rc = 0; | |
120 | ||
121 | psy->online_trig_name = kmalloc(strlen(psy->name) + sizeof("-online"), | |
122 | GFP_KERNEL); | |
123 | if (!psy->online_trig_name) | |
124 | goto online_failed; | |
125 | ||
126 | strcpy(psy->online_trig_name, psy->name); | |
127 | strcat(psy->online_trig_name, "-online"); | |
128 | ||
129 | led_trigger_register_simple(psy->online_trig_name, &psy->online_trig); | |
130 | ||
131 | goto success; | |
132 | ||
133 | online_failed: | |
134 | rc = -ENOMEM; | |
135 | success: | |
136 | return rc; | |
137 | } | |
138 | ||
139 | static void power_supply_remove_gen_triggers(struct power_supply *psy) | |
140 | { | |
141 | led_trigger_unregister_simple(psy->online_trig); | |
142 | kfree(psy->online_trig_name); | |
4a11b59d AV |
143 | } |
144 | ||
145 | /* Choice what triggers to create&update. */ | |
146 | ||
147 | void power_supply_update_leds(struct power_supply *psy) | |
148 | { | |
149 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
150 | power_supply_update_bat_leds(psy); | |
151 | else | |
152 | power_supply_update_gen_leds(psy); | |
4a11b59d AV |
153 | } |
154 | ||
155 | int power_supply_create_triggers(struct power_supply *psy) | |
156 | { | |
157 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
158 | return power_supply_create_bat_triggers(psy); | |
159 | return power_supply_create_gen_triggers(psy); | |
160 | } | |
161 | ||
162 | void power_supply_remove_triggers(struct power_supply *psy) | |
163 | { | |
164 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
165 | power_supply_remove_bat_triggers(psy); | |
166 | else | |
167 | power_supply_remove_gen_triggers(psy); | |
4a11b59d | 168 | } |