[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/power_supply.h>

/* Battery specific LEDs triggers. */

static void power_supply_update_bat_leds(struct power_supply *psy)
{
	union power_supply_propval status;

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

	dev_dbg(psy->dev, "%s %d\n", __FUNCTION__, 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);
		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);
		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);
		break;
	}
}

static int power_supply_create_bat_triggers(struct power_supply *psy)
{
	int rc = 0;

	psy->charging_full_trig_name = kmalloc(strlen(psy->name) +
				  sizeof("-charging-or-full"), GFP_KERNEL);
	if (!psy->charging_full_trig_name)
		goto charging_full_failed;

	psy->charging_trig_name = kmalloc(strlen(psy->name) +
					  sizeof("-charging"), GFP_KERNEL);
	if (!psy->charging_trig_name)
		goto charging_failed;

	psy->full_trig_name = kmalloc(strlen(psy->name) +
				      sizeof("-full"), GFP_KERNEL);
	if (!psy->full_trig_name)
		goto full_failed;

	strcpy(psy->charging_full_trig_name, psy->name);
	strcat(psy->charging_full_trig_name, "-charging-or-full");
	strcpy(psy->charging_trig_name, psy->name);
	strcat(psy->charging_trig_name, "-charging");
	strcpy(psy->full_trig_name, psy->name);
	strcat(psy->full_trig_name, "-full");

	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);

	goto success;

full_failed:
	kfree(psy->charging_trig_name);
charging_failed:
	kfree(psy->charging_full_trig_name);
charging_full_failed:
	rc = -ENOMEM;
success:
	return rc;
}

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);
	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", __FUNCTION__, 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)
{
	int rc = 0;

	psy->online_trig_name = kmalloc(strlen(psy->name) + sizeof("-online"),
					GFP_KERNEL);
	if (!psy->online_trig_name)
		goto online_failed;

	strcpy(psy->online_trig_name, psy->name);
	strcat(psy->online_trig_name, "-online");

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

	goto success;

online_failed:
	rc = -ENOMEM;
success:
	return rc;
}

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
	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	}