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169 lines
4.7 KiB
169 lines
4.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* LEDs triggers for power supply class |
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* |
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* Copyright © 2007 Anton Vorontsov <[email protected]> |
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* Copyright © 2004 Szabolcs Gyurko |
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* Copyright © 2003 Ian Molton <[email protected]> |
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* |
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* Modified: 2004, Oct Szabolcs Gyurko |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/device.h> |
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#include <linux/power_supply.h> |
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#include <linux/slab.h> |
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#include "power_supply.h" |
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/* Battery specific LEDs triggers. */ |
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static void power_supply_update_bat_leds(struct power_supply *psy) |
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{ |
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union power_supply_propval status; |
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unsigned long delay_on = 0; |
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unsigned long delay_off = 0; |
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if (power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS, &status)) |
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return; |
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dev_dbg(&psy->dev, "%s %d\n", __func__, status.intval); |
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switch (status.intval) { |
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case POWER_SUPPLY_STATUS_FULL: |
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led_trigger_event(psy->charging_full_trig, LED_FULL); |
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led_trigger_event(psy->charging_trig, LED_OFF); |
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led_trigger_event(psy->full_trig, LED_FULL); |
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led_trigger_event(psy->charging_blink_full_solid_trig, |
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LED_FULL); |
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break; |
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case POWER_SUPPLY_STATUS_CHARGING: |
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led_trigger_event(psy->charging_full_trig, LED_FULL); |
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led_trigger_event(psy->charging_trig, LED_FULL); |
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led_trigger_event(psy->full_trig, LED_OFF); |
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led_trigger_blink(psy->charging_blink_full_solid_trig, |
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&delay_on, &delay_off); |
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break; |
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default: |
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led_trigger_event(psy->charging_full_trig, LED_OFF); |
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led_trigger_event(psy->charging_trig, LED_OFF); |
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led_trigger_event(psy->full_trig, LED_OFF); |
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led_trigger_event(psy->charging_blink_full_solid_trig, |
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LED_OFF); |
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break; |
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} |
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} |
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static int power_supply_create_bat_triggers(struct power_supply *psy) |
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{ |
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psy->charging_full_trig_name = kasprintf(GFP_KERNEL, |
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"%s-charging-or-full", psy->desc->name); |
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if (!psy->charging_full_trig_name) |
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goto charging_full_failed; |
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psy->charging_trig_name = kasprintf(GFP_KERNEL, |
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"%s-charging", psy->desc->name); |
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if (!psy->charging_trig_name) |
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goto charging_failed; |
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psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->desc->name); |
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if (!psy->full_trig_name) |
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goto full_failed; |
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psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL, |
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"%s-charging-blink-full-solid", psy->desc->name); |
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if (!psy->charging_blink_full_solid_trig_name) |
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goto charging_blink_full_solid_failed; |
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led_trigger_register_simple(psy->charging_full_trig_name, |
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&psy->charging_full_trig); |
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led_trigger_register_simple(psy->charging_trig_name, |
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&psy->charging_trig); |
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led_trigger_register_simple(psy->full_trig_name, |
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&psy->full_trig); |
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led_trigger_register_simple(psy->charging_blink_full_solid_trig_name, |
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&psy->charging_blink_full_solid_trig); |
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return 0; |
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charging_blink_full_solid_failed: |
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kfree(psy->full_trig_name); |
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full_failed: |
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kfree(psy->charging_trig_name); |
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charging_failed: |
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kfree(psy->charging_full_trig_name); |
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charging_full_failed: |
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return -ENOMEM; |
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} |
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static void power_supply_remove_bat_triggers(struct power_supply *psy) |
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{ |
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led_trigger_unregister_simple(psy->charging_full_trig); |
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led_trigger_unregister_simple(psy->charging_trig); |
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led_trigger_unregister_simple(psy->full_trig); |
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led_trigger_unregister_simple(psy->charging_blink_full_solid_trig); |
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kfree(psy->charging_blink_full_solid_trig_name); |
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kfree(psy->full_trig_name); |
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kfree(psy->charging_trig_name); |
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kfree(psy->charging_full_trig_name); |
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} |
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/* Generated power specific LEDs triggers. */ |
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static void power_supply_update_gen_leds(struct power_supply *psy) |
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{ |
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union power_supply_propval online; |
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if (power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online)) |
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return; |
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dev_dbg(&psy->dev, "%s %d\n", __func__, online.intval); |
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if (online.intval) |
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led_trigger_event(psy->online_trig, LED_FULL); |
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else |
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led_trigger_event(psy->online_trig, LED_OFF); |
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} |
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static int power_supply_create_gen_triggers(struct power_supply *psy) |
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{ |
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psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", |
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psy->desc->name); |
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if (!psy->online_trig_name) |
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return -ENOMEM; |
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led_trigger_register_simple(psy->online_trig_name, &psy->online_trig); |
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return 0; |
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} |
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static void power_supply_remove_gen_triggers(struct power_supply *psy) |
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{ |
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led_trigger_unregister_simple(psy->online_trig); |
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kfree(psy->online_trig_name); |
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} |
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/* Choice what triggers to create&update. */ |
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void power_supply_update_leds(struct power_supply *psy) |
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{ |
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if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY) |
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power_supply_update_bat_leds(psy); |
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else |
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power_supply_update_gen_leds(psy); |
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} |
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int power_supply_create_triggers(struct power_supply *psy) |
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{ |
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if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY) |
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return power_supply_create_bat_triggers(psy); |
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return power_supply_create_gen_triggers(psy); |
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} |
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void power_supply_remove_triggers(struct power_supply *psy) |
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{ |
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if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY) |
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power_supply_remove_bat_triggers(psy); |
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else |
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power_supply_remove_gen_triggers(psy); |
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}
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