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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 | } | |
43 | ||
44 | return; | |
45 | } | |
46 | ||
47 | static int power_supply_create_bat_triggers(struct power_supply *psy) | |
48 | { | |
49 | int rc = 0; | |
50 | ||
51 | psy->charging_full_trig_name = kmalloc(strlen(psy->name) + | |
52 | sizeof("-charging-or-full"), GFP_KERNEL); | |
53 | if (!psy->charging_full_trig_name) | |
54 | goto charging_full_failed; | |
55 | ||
56 | psy->charging_trig_name = kmalloc(strlen(psy->name) + | |
57 | sizeof("-charging"), GFP_KERNEL); | |
58 | if (!psy->charging_trig_name) | |
59 | goto charging_failed; | |
60 | ||
61 | psy->full_trig_name = kmalloc(strlen(psy->name) + | |
62 | sizeof("-full"), GFP_KERNEL); | |
63 | if (!psy->full_trig_name) | |
64 | goto full_failed; | |
65 | ||
66 | strcpy(psy->charging_full_trig_name, psy->name); | |
67 | strcat(psy->charging_full_trig_name, "-charging-or-full"); | |
68 | strcpy(psy->charging_trig_name, psy->name); | |
69 | strcat(psy->charging_trig_name, "-charging"); | |
70 | strcpy(psy->full_trig_name, psy->name); | |
71 | strcat(psy->full_trig_name, "-full"); | |
72 | ||
73 | led_trigger_register_simple(psy->charging_full_trig_name, | |
74 | &psy->charging_full_trig); | |
75 | led_trigger_register_simple(psy->charging_trig_name, | |
76 | &psy->charging_trig); | |
77 | led_trigger_register_simple(psy->full_trig_name, | |
78 | &psy->full_trig); | |
79 | ||
80 | goto success; | |
81 | ||
82 | full_failed: | |
83 | kfree(psy->charging_trig_name); | |
84 | charging_failed: | |
85 | kfree(psy->charging_full_trig_name); | |
86 | charging_full_failed: | |
87 | rc = -ENOMEM; | |
88 | success: | |
89 | return rc; | |
90 | } | |
91 | ||
92 | static void power_supply_remove_bat_triggers(struct power_supply *psy) | |
93 | { | |
94 | led_trigger_unregister_simple(psy->charging_full_trig); | |
95 | led_trigger_unregister_simple(psy->charging_trig); | |
96 | led_trigger_unregister_simple(psy->full_trig); | |
97 | kfree(psy->full_trig_name); | |
98 | kfree(psy->charging_trig_name); | |
99 | kfree(psy->charging_full_trig_name); | |
100 | return; | |
101 | } | |
102 | ||
103 | /* Generated power specific LEDs triggers. */ | |
104 | ||
105 | static void power_supply_update_gen_leds(struct power_supply *psy) | |
106 | { | |
107 | union power_supply_propval online; | |
108 | ||
109 | if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online)) | |
110 | return; | |
111 | ||
112 | dev_dbg(psy->dev, "%s %d\n", __FUNCTION__, online.intval); | |
113 | ||
114 | if (online.intval) | |
115 | led_trigger_event(psy->online_trig, LED_FULL); | |
116 | else | |
117 | led_trigger_event(psy->online_trig, LED_OFF); | |
118 | ||
119 | return; | |
120 | } | |
121 | ||
122 | static int power_supply_create_gen_triggers(struct power_supply *psy) | |
123 | { | |
124 | int rc = 0; | |
125 | ||
126 | psy->online_trig_name = kmalloc(strlen(psy->name) + sizeof("-online"), | |
127 | GFP_KERNEL); | |
128 | if (!psy->online_trig_name) | |
129 | goto online_failed; | |
130 | ||
131 | strcpy(psy->online_trig_name, psy->name); | |
132 | strcat(psy->online_trig_name, "-online"); | |
133 | ||
134 | led_trigger_register_simple(psy->online_trig_name, &psy->online_trig); | |
135 | ||
136 | goto success; | |
137 | ||
138 | online_failed: | |
139 | rc = -ENOMEM; | |
140 | success: | |
141 | return rc; | |
142 | } | |
143 | ||
144 | static void power_supply_remove_gen_triggers(struct power_supply *psy) | |
145 | { | |
146 | led_trigger_unregister_simple(psy->online_trig); | |
147 | kfree(psy->online_trig_name); | |
148 | return; | |
149 | } | |
150 | ||
151 | /* Choice what triggers to create&update. */ | |
152 | ||
153 | void power_supply_update_leds(struct power_supply *psy) | |
154 | { | |
155 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
156 | power_supply_update_bat_leds(psy); | |
157 | else | |
158 | power_supply_update_gen_leds(psy); | |
159 | return; | |
160 | } | |
161 | ||
162 | int power_supply_create_triggers(struct power_supply *psy) | |
163 | { | |
164 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
165 | return power_supply_create_bat_triggers(psy); | |
166 | return power_supply_create_gen_triggers(psy); | |
167 | } | |
168 | ||
169 | void power_supply_remove_triggers(struct power_supply *psy) | |
170 | { | |
171 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) | |
172 | power_supply_remove_bat_triggers(psy); | |
173 | else | |
174 | power_supply_remove_gen_triggers(psy); | |
175 | return; | |
176 | } |