[linux-2.6-block.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>

#include "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
25f12141 AB	15	#include "power_supply.h"
25f12141 AB	16
4a11b59d AV	17	/* Battery specific LEDs triggers. */
	18
	19	static void power_supply_update_bat_leds(struct power_supply *psy)
	20	{
	21	union power_supply_propval status;
	22
	23	if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
	24	return;
	25
	26	dev_dbg(psy->dev, "%s %d\n", __FUNCTION__, status.intval);
	27
	28	switch (status.intval) {
	29	case POWER_SUPPLY_STATUS_FULL:
	30	led_trigger_event(psy->charging_full_trig, LED_FULL);
	31	led_trigger_event(psy->charging_trig, LED_OFF);
	32	led_trigger_event(psy->full_trig, LED_FULL);
	33	break;
	34	case POWER_SUPPLY_STATUS_CHARGING:
	35	led_trigger_event(psy->charging_full_trig, LED_FULL);
	36	led_trigger_event(psy->charging_trig, LED_FULL);
	37	led_trigger_event(psy->full_trig, LED_OFF);
	38	break;
	39	default:
	40	led_trigger_event(psy->charging_full_trig, LED_OFF);
	41	led_trigger_event(psy->charging_trig, LED_OFF);
	42	led_trigger_event(psy->full_trig, LED_OFF);
	43	break;
	44	}
4a11b59d AV	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);
4a11b59d AV	100	}
	101
	102	/* Generated power specific LEDs triggers. */
	103
	104	static void power_supply_update_gen_leds(struct power_supply *psy)
	105	{
	106	union power_supply_propval online;
	107
	108	if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
	109	return;
	110
	111	dev_dbg(psy->dev, "%s %d\n", __FUNCTION__, online.intval);
	112
	113	if (online.intval)
	114	led_trigger_event(psy->online_trig, LED_FULL);
	115	else
	116	led_trigger_event(psy->online_trig, LED_OFF);
4a11b59d AV	117	}
	118
	119	static int power_supply_create_gen_triggers(struct power_supply *psy)
	120	{
	121	int rc = 0;
	122
	123	psy->online_trig_name = kmalloc(strlen(psy->name) + sizeof("-online"),
	124	GFP_KERNEL);
	125	if (!psy->online_trig_name)
	126	goto online_failed;
	127
	128	strcpy(psy->online_trig_name, psy->name);
	129	strcat(psy->online_trig_name, "-online");
	130
	131	led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
	132
	133	goto success;
	134
	135	online_failed:
	136	rc = -ENOMEM;
	137	success:
	138	return rc;
	139	}
	140
	141	static void power_supply_remove_gen_triggers(struct power_supply *psy)
	142	{
	143	led_trigger_unregister_simple(psy->online_trig);
	144	kfree(psy->online_trig_name);
4a11b59d AV	145	}
	146
	147	/* Choice what triggers to create&update. */
	148
	149	void power_supply_update_leds(struct power_supply *psy)
	150	{
	151	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	152	power_supply_update_bat_leds(psy);
	153	else
	154	power_supply_update_gen_leds(psy);
4a11b59d AV	155	}
	156
	157	int power_supply_create_triggers(struct power_supply *psy)
	158	{
	159	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	160	return power_supply_create_bat_triggers(psy);
	161	return power_supply_create_gen_triggers(psy);
	162	}
	163
	164	void power_supply_remove_triggers(struct power_supply *psy)
	165	{
	166	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	167	power_supply_remove_bat_triggers(psy);
	168	else
	169	power_supply_remove_gen_triggers(psy);
4a11b59d	170	}