Root/
| 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/kernel.h> |
| 14 | #include <linux/device.h> |
| 15 | #include <linux/power_supply.h> |
| 16 | #include <linux/slab.h> |
| 17 | |
| 18 | #include "power_supply.h" |
| 19 | |
| 20 | /* Battery specific LEDs triggers. */ |
| 21 | |
| 22 | static void power_supply_update_bat_leds(struct power_supply *psy) |
| 23 | { |
| 24 | union power_supply_propval status; |
| 25 | unsigned long delay_on = 0; |
| 26 | unsigned long delay_off = 0; |
| 27 | |
| 28 | if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status)) |
| 29 | return; |
| 30 | |
| 31 | dev_dbg(psy->dev, "%s %d\n", __func__, status.intval); |
| 32 | |
| 33 | switch (status.intval) { |
| 34 | case POWER_SUPPLY_STATUS_FULL: |
| 35 | led_trigger_event(psy->charging_full_trig, LED_FULL); |
| 36 | led_trigger_event(psy->charging_trig, LED_OFF); |
| 37 | led_trigger_event(psy->full_trig, LED_FULL); |
| 38 | led_trigger_event(psy->charging_blink_full_solid_trig, |
| 39 | LED_FULL); |
| 40 | break; |
| 41 | case POWER_SUPPLY_STATUS_CHARGING: |
| 42 | led_trigger_event(psy->charging_full_trig, LED_FULL); |
| 43 | led_trigger_event(psy->charging_trig, LED_FULL); |
| 44 | led_trigger_event(psy->full_trig, LED_OFF); |
| 45 | led_trigger_blink(psy->charging_blink_full_solid_trig, |
| 46 | &delay_on, &delay_off); |
| 47 | break; |
| 48 | default: |
| 49 | led_trigger_event(psy->charging_full_trig, LED_OFF); |
| 50 | led_trigger_event(psy->charging_trig, LED_OFF); |
| 51 | led_trigger_event(psy->full_trig, LED_OFF); |
| 52 | led_trigger_event(psy->charging_blink_full_solid_trig, |
| 53 | LED_OFF); |
| 54 | break; |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | static int power_supply_create_bat_triggers(struct power_supply *psy) |
| 59 | { |
| 60 | int rc = 0; |
| 61 | |
| 62 | psy->charging_full_trig_name = kasprintf(GFP_KERNEL, |
| 63 | "%s-charging-or-full", psy->name); |
| 64 | if (!psy->charging_full_trig_name) |
| 65 | goto charging_full_failed; |
| 66 | |
| 67 | psy->charging_trig_name = kasprintf(GFP_KERNEL, |
| 68 | "%s-charging", psy->name); |
| 69 | if (!psy->charging_trig_name) |
| 70 | goto charging_failed; |
| 71 | |
| 72 | psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name); |
| 73 | if (!psy->full_trig_name) |
| 74 | goto full_failed; |
| 75 | |
| 76 | psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL, |
| 77 | "%s-charging-blink-full-solid", psy->name); |
| 78 | if (!psy->charging_blink_full_solid_trig_name) |
| 79 | goto charging_blink_full_solid_failed; |
| 80 | |
| 81 | led_trigger_register_simple(psy->charging_full_trig_name, |
| 82 | &psy->charging_full_trig); |
| 83 | led_trigger_register_simple(psy->charging_trig_name, |
| 84 | &psy->charging_trig); |
| 85 | led_trigger_register_simple(psy->full_trig_name, |
| 86 | &psy->full_trig); |
| 87 | led_trigger_register_simple(psy->charging_blink_full_solid_trig_name, |
| 88 | &psy->charging_blink_full_solid_trig); |
| 89 | |
| 90 | goto success; |
| 91 | |
| 92 | charging_blink_full_solid_failed: |
| 93 | kfree(psy->full_trig_name); |
| 94 | full_failed: |
| 95 | kfree(psy->charging_trig_name); |
| 96 | charging_failed: |
| 97 | kfree(psy->charging_full_trig_name); |
| 98 | charging_full_failed: |
| 99 | rc = -ENOMEM; |
| 100 | success: |
| 101 | return rc; |
| 102 | } |
| 103 | |
| 104 | static void power_supply_remove_bat_triggers(struct power_supply *psy) |
| 105 | { |
| 106 | led_trigger_unregister_simple(psy->charging_full_trig); |
| 107 | led_trigger_unregister_simple(psy->charging_trig); |
| 108 | led_trigger_unregister_simple(psy->full_trig); |
| 109 | led_trigger_unregister_simple(psy->charging_blink_full_solid_trig); |
| 110 | kfree(psy->charging_blink_full_solid_trig_name); |
| 111 | kfree(psy->full_trig_name); |
| 112 | kfree(psy->charging_trig_name); |
| 113 | kfree(psy->charging_full_trig_name); |
| 114 | } |
| 115 | |
| 116 | /* Generated power specific LEDs triggers. */ |
| 117 | |
| 118 | static void power_supply_update_gen_leds(struct power_supply *psy) |
| 119 | { |
| 120 | union power_supply_propval online; |
| 121 | |
| 122 | if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online)) |
| 123 | return; |
| 124 | |
| 125 | dev_dbg(psy->dev, "%s %d\n", __func__, online.intval); |
| 126 | |
| 127 | if (online.intval) |
| 128 | led_trigger_event(psy->online_trig, LED_FULL); |
| 129 | else |
| 130 | led_trigger_event(psy->online_trig, LED_OFF); |
| 131 | } |
| 132 | |
| 133 | static int power_supply_create_gen_triggers(struct power_supply *psy) |
| 134 | { |
| 135 | int rc = 0; |
| 136 | |
| 137 | psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name); |
| 138 | if (!psy->online_trig_name) |
| 139 | goto online_failed; |
| 140 | |
| 141 | led_trigger_register_simple(psy->online_trig_name, &psy->online_trig); |
| 142 | |
| 143 | goto success; |
| 144 | |
| 145 | online_failed: |
| 146 | rc = -ENOMEM; |
| 147 | success: |
| 148 | return rc; |
| 149 | } |
| 150 | |
| 151 | static void power_supply_remove_gen_triggers(struct power_supply *psy) |
| 152 | { |
| 153 | led_trigger_unregister_simple(psy->online_trig); |
| 154 | kfree(psy->online_trig_name); |
| 155 | } |
| 156 | |
| 157 | /* Choice what triggers to create&update. */ |
| 158 | |
| 159 | void power_supply_update_leds(struct power_supply *psy) |
| 160 | { |
| 161 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) |
| 162 | power_supply_update_bat_leds(psy); |
| 163 | else |
| 164 | power_supply_update_gen_leds(psy); |
| 165 | } |
| 166 | |
| 167 | int power_supply_create_triggers(struct power_supply *psy) |
| 168 | { |
| 169 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) |
| 170 | return power_supply_create_bat_triggers(psy); |
| 171 | return power_supply_create_gen_triggers(psy); |
| 172 | } |
| 173 | |
| 174 | void power_supply_remove_triggers(struct power_supply *psy) |
| 175 | { |
| 176 | if (psy->type == POWER_SUPPLY_TYPE_BATTERY) |
| 177 | power_supply_remove_bat_triggers(psy); |
| 178 | else |
| 179 | power_supply_remove_gen_triggers(psy); |
| 180 | } |
| 181 |
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Tags:
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v2.6.34-rc5
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