[deliverable/linux.git] / drivers / power / power_supply_leds.c

/*
 *  LEDs triggers for power supply class
 *
 *  Copyright © 2007  Anton Vorontsov <cbou@mail.ru>
 *  Copyright © 2004  Szabolcs Gyurko
 *  Copyright © 2003  Ian Molton <spyro@f2s.com>
 *
 *  Modified: 2004, Oct     Szabolcs Gyurko
 *
 *  You may use this code as per GPL version 2
 */

#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/power_supply.h>
#include <linux/slab.h>

#include "power_supply.h"

/* Battery specific LEDs triggers. */

static void power_supply_update_bat_leds(struct power_supply *psy)
{
	union power_supply_propval status;
	unsigned long delay_on = 0;
	unsigned long delay_off = 0;

	if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
		return;

	dev_dbg(psy->dev, "%s %d\n", __func__, status.intval);

	switch (status.intval) {
	case POWER_SUPPLY_STATUS_FULL:
		led_trigger_event(psy->charging_full_trig, LED_FULL);
		led_trigger_event(psy->charging_trig, LED_OFF);
		led_trigger_event(psy->full_trig, LED_FULL);
		led_trigger_event(psy->charging_blink_full_solid_trig,
			LED_FULL);
		break;
	case POWER_SUPPLY_STATUS_CHARGING:
		led_trigger_event(psy->charging_full_trig, LED_FULL);
		led_trigger_event(psy->charging_trig, LED_FULL);
		led_trigger_event(psy->full_trig, LED_OFF);
		led_trigger_blink(psy->charging_blink_full_solid_trig,
			&delay_on, &delay_off);
		break;
	default:
		led_trigger_event(psy->charging_full_trig, LED_OFF);
		led_trigger_event(psy->charging_trig, LED_OFF);
		led_trigger_event(psy->full_trig, LED_OFF);
		led_trigger_event(psy->charging_blink_full_solid_trig,
			LED_OFF);
		break;
	}
}

static int power_supply_create_bat_triggers(struct power_supply *psy)
{
	psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
					"%s-charging-or-full", psy->name);
	if (!psy->charging_full_trig_name)
		goto charging_full_failed;

	psy->charging_trig_name = kasprintf(GFP_KERNEL,
					"%s-charging", psy->name);
	if (!psy->charging_trig_name)
		goto charging_failed;

	psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name);
	if (!psy->full_trig_name)
		goto full_failed;

	psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL,
		"%s-charging-blink-full-solid", psy->name);
	if (!psy->charging_blink_full_solid_trig_name)
		goto charging_blink_full_solid_failed;

	led_trigger_register_simple(psy->charging_full_trig_name,
				    &psy->charging_full_trig);
	led_trigger_register_simple(psy->charging_trig_name,
				    &psy->charging_trig);
	led_trigger_register_simple(psy->full_trig_name,
				    &psy->full_trig);
	led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
				    &psy->charging_blink_full_solid_trig);

	return 0;

charging_blink_full_solid_failed:
	kfree(psy->full_trig_name);
full_failed:
	kfree(psy->charging_trig_name);
charging_failed:
	kfree(psy->charging_full_trig_name);
charging_full_failed:
	return -ENOMEM;
}

static void power_supply_remove_bat_triggers(struct power_supply *psy)
{
	led_trigger_unregister_simple(psy->charging_full_trig);
	led_trigger_unregister_simple(psy->charging_trig);
	led_trigger_unregister_simple(psy->full_trig);
	led_trigger_unregister_simple(psy->charging_blink_full_solid_trig);
	kfree(psy->charging_blink_full_solid_trig_name);
	kfree(psy->full_trig_name);
	kfree(psy->charging_trig_name);
	kfree(psy->charging_full_trig_name);
}

/* Generated power specific LEDs triggers. */

static void power_supply_update_gen_leds(struct power_supply *psy)
{
	union power_supply_propval online;

	if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
		return;

	dev_dbg(psy->dev, "%s %d\n", __func__, online.intval);

	if (online.intval)
		led_trigger_event(psy->online_trig, LED_FULL);
	else
		led_trigger_event(psy->online_trig, LED_OFF);
}

static int power_supply_create_gen_triggers(struct power_supply *psy)
{
	psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name);
	if (!psy->online_trig_name)
		return -ENOMEM;

	led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);

	return 0;
}

static void power_supply_remove_gen_triggers(struct power_supply *psy)
{
	led_trigger_unregister_simple(psy->online_trig);
	kfree(psy->online_trig_name);
}

/* Choice what triggers to create&update. */

void power_supply_update_leds(struct power_supply *psy)
{
	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
		power_supply_update_bat_leds(psy);
	else
		power_supply_update_gen_leds(psy);
}

int power_supply_create_triggers(struct power_supply *psy)
{
	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
		return power_supply_create_bat_triggers(psy);
	return power_supply_create_gen_triggers(psy);
}

void power_supply_remove_triggers(struct power_supply *psy)
{
	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
		power_supply_remove_bat_triggers(psy);
	else
		power_supply_remove_gen_triggers(psy);
}
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>
51990e82	14	#include <linux/device.h>
4a11b59d	15	#include <linux/power_supply.h>
5a0e3ad6	16	#include <linux/slab.h>
4a11b59d	17
25f12141 AB	18	#include "power_supply.h"
25f12141 AB	19
4a11b59d AV	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;
6501f728 VK	25	unsigned long delay_on = 0;
6501f728 VK	26	unsigned long delay_off = 0;
4a11b59d AV	27
	28	if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
	29	return;
	30
0cddc0a9	31	dev_dbg(psy->dev, "%s %d\n", __func__, status.intval);
4a11b59d AV	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);
6501f728 VK	38	led_trigger_event(psy->charging_blink_full_solid_trig,
6501f728 VK	39	LED_FULL);
4a11b59d AV	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);
6501f728 VK	45	led_trigger_blink(psy->charging_blink_full_solid_trig,
6501f728 VK	46	&delay_on, &delay_off);
4a11b59d AV	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);
6501f728 VK	52	led_trigger_event(psy->charging_blink_full_solid_trig,
6501f728 VK	53	LED_OFF);
4a11b59d AV	54	break;
4a11b59d AV	55	}
4a11b59d AV	56	}
	57
	58	static int power_supply_create_bat_triggers(struct power_supply *psy)
	59	{
4d24473c AM	60	psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
4d24473c AM	61	"%s-charging-or-full", psy->name);
4a11b59d AV	62	if (!psy->charging_full_trig_name)
	63	goto charging_full_failed;
	64
4d24473c AM	65	psy->charging_trig_name = kasprintf(GFP_KERNEL,
4d24473c AM	66	"%s-charging", psy->name);
4a11b59d AV	67	if (!psy->charging_trig_name)
	68	goto charging_failed;
	69
4d24473c	70	psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name);
4a11b59d AV	71	if (!psy->full_trig_name)
	72	goto full_failed;
	73
6501f728 VK	74	psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL,
	75	"%s-charging-blink-full-solid", psy->name);
	76	if (!psy->charging_blink_full_solid_trig_name)
	77	goto charging_blink_full_solid_failed;
	78
4a11b59d AV	79	led_trigger_register_simple(psy->charging_full_trig_name,
	80	&psy->charging_full_trig);
	81	led_trigger_register_simple(psy->charging_trig_name,
	82	&psy->charging_trig);
	83	led_trigger_register_simple(psy->full_trig_name,
	84	&psy->full_trig);
6501f728 VK	85	led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
6501f728 VK	86	&psy->charging_blink_full_solid_trig);
4a11b59d	87
464069ca	88	return 0;
4a11b59d	89
6501f728 VK	90	charging_blink_full_solid_failed:
6501f728 VK	91	kfree(psy->full_trig_name);
4a11b59d AV	92	full_failed:
	93	kfree(psy->charging_trig_name);
	94	charging_failed:
	95	kfree(psy->charging_full_trig_name);
	96	charging_full_failed:
464069ca	97	return -ENOMEM;
4a11b59d AV	98	}
	99
	100	static void power_supply_remove_bat_triggers(struct power_supply *psy)
	101	{
	102	led_trigger_unregister_simple(psy->charging_full_trig);
	103	led_trigger_unregister_simple(psy->charging_trig);
	104	led_trigger_unregister_simple(psy->full_trig);
6501f728 VK	105	led_trigger_unregister_simple(psy->charging_blink_full_solid_trig);
6501f728 VK	106	kfree(psy->charging_blink_full_solid_trig_name);
4a11b59d AV	107	kfree(psy->full_trig_name);
	108	kfree(psy->charging_trig_name);
	109	kfree(psy->charging_full_trig_name);
4a11b59d AV	110	}
	111
	112	/* Generated power specific LEDs triggers. */
	113
	114	static void power_supply_update_gen_leds(struct power_supply *psy)
	115	{
	116	union power_supply_propval online;
	117
	118	if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
	119	return;
	120
0cddc0a9	121	dev_dbg(psy->dev, "%s %d\n", __func__, online.intval);
4a11b59d AV	122
	123	if (online.intval)
	124	led_trigger_event(psy->online_trig, LED_FULL);
	125	else
	126	led_trigger_event(psy->online_trig, LED_OFF);
4a11b59d AV	127	}
	128
	129	static int power_supply_create_gen_triggers(struct power_supply *psy)
	130	{
4d24473c	131	psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name);
4a11b59d	132	if (!psy->online_trig_name)
464069ca	133	return -ENOMEM;
4a11b59d	134
4a11b59d AV	135	led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
4a11b59d AV	136
464069ca	137	return 0;
4a11b59d AV	138	}
	139
	140	static void power_supply_remove_gen_triggers(struct power_supply *psy)
	141	{
	142	led_trigger_unregister_simple(psy->online_trig);
	143	kfree(psy->online_trig_name);
4a11b59d AV	144	}
	145
	146	/* Choice what triggers to create&update. */
	147
	148	void power_supply_update_leds(struct power_supply *psy)
	149	{
	150	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	151	power_supply_update_bat_leds(psy);
	152	else
	153	power_supply_update_gen_leds(psy);
4a11b59d AV	154	}
	155
	156	int power_supply_create_triggers(struct power_supply *psy)
	157	{
	158	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	159	return power_supply_create_bat_triggers(psy);
	160	return power_supply_create_gen_triggers(psy);
	161	}
	162
	163	void power_supply_remove_triggers(struct power_supply *psy)
	164	{
	165	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	166	power_supply_remove_bat_triggers(psy);
	167	else
	168	power_supply_remove_gen_triggers(psy);
4a11b59d	169	}