[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/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 (power_supply_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->desc->name);
	if (!psy->charging_full_trig_name)
		goto charging_full_failed;

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

	psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->desc->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->desc->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 (power_supply_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->desc->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->desc->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->desc->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->desc->type == POWER_SUPPLY_TYPE_BATTERY)
		power_supply_remove_bat_triggers(psy);
	else
		power_supply_remove_gen_triggers(psy);
}
Commit	Line	Data
	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 (power_supply_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	psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
	61	"%s-charging-or-full", psy->desc->name);
	62	if (!psy->charging_full_trig_name)
	63	goto charging_full_failed;
	64
	65	psy->charging_trig_name = kasprintf(GFP_KERNEL,
	66	"%s-charging", psy->desc->name);
	67	if (!psy->charging_trig_name)
	68	goto charging_failed;
	69
	70	psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->desc->name);
	71	if (!psy->full_trig_name)
	72	goto full_failed;
	73
	74	psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL,
	75	"%s-charging-blink-full-solid", psy->desc->name);
	76	if (!psy->charging_blink_full_solid_trig_name)
	77	goto charging_blink_full_solid_failed;
	78
	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);
	85	led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
	86	&psy->charging_blink_full_solid_trig);
	87
	88	return 0;
	89
	90	charging_blink_full_solid_failed:
	91	kfree(psy->full_trig_name);
	92	full_failed:
	93	kfree(psy->charging_trig_name);
	94	charging_failed:
	95	kfree(psy->charging_full_trig_name);
	96	charging_full_failed:
	97	return -ENOMEM;
	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);
	105	led_trigger_unregister_simple(psy->charging_blink_full_solid_trig);
	106	kfree(psy->charging_blink_full_solid_trig_name);
	107	kfree(psy->full_trig_name);
	108	kfree(psy->charging_trig_name);
	109	kfree(psy->charging_full_trig_name);
	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 (power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
	119	return;
	120
	121	dev_dbg(&psy->dev, "%s %d\n", __func__, online.intval);
	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);
	127	}
	128
	129	static int power_supply_create_gen_triggers(struct power_supply *psy)
	130	{
	131	psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online",
	132	psy->desc->name);
	133	if (!psy->online_trig_name)
	134	return -ENOMEM;
	135
	136	led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
	137
	138	return 0;
	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);
	145	}
	146
	147	/* Choice what triggers to create&update. */
	148
	149	void power_supply_update_leds(struct power_supply *psy)
	150	{
	151	if (psy->desc->type == POWER_SUPPLY_TYPE_BATTERY)
	152	power_supply_update_bat_leds(psy);
	153	else
	154	power_supply_update_gen_leds(psy);
	155	}
	156
	157	int power_supply_create_triggers(struct power_supply *psy)
	158	{
	159	if (psy->desc->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->desc->type == POWER_SUPPLY_TYPE_BATTERY)
	167	power_supply_remove_bat_triggers(psy);
	168	else
	169	power_supply_remove_gen_triggers(psy);
	170	}