[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/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)
{
	int rc = 0;

	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);

	goto success;

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:
	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);
	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)
{
	int rc = 0;

	psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name);
	if (!psy->online_trig_name)
		goto online_failed;

	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
4d24473c	13	#include <linux/kernel.h>
4a11b59d	14	#include <linux/power_supply.h>
5a0e3ad6	15	#include <linux/slab.h>
4a11b59d	16
25f12141 AB	17	#include "power_supply.h"
25f12141 AB	18
4a11b59d AV	19	/* Battery specific LEDs triggers. */
	20
	21	static void power_supply_update_bat_leds(struct power_supply *psy)
	22	{
	23	union power_supply_propval status;
6501f728 VK	24	unsigned long delay_on = 0;
6501f728 VK	25	unsigned long delay_off = 0;
4a11b59d AV	26
	27	if (psy->get_property(psy, POWER_SUPPLY_PROP_STATUS, &status))
	28	return;
	29
0cddc0a9	30	dev_dbg(psy->dev, "%s %d\n", __func__, status.intval);
4a11b59d AV	31
	32	switch (status.intval) {
	33	case POWER_SUPPLY_STATUS_FULL:
	34	led_trigger_event(psy->charging_full_trig, LED_FULL);
	35	led_trigger_event(psy->charging_trig, LED_OFF);
	36	led_trigger_event(psy->full_trig, LED_FULL);
6501f728 VK	37	led_trigger_event(psy->charging_blink_full_solid_trig,
6501f728 VK	38	LED_FULL);
4a11b59d AV	39	break;
	40	case POWER_SUPPLY_STATUS_CHARGING:
	41	led_trigger_event(psy->charging_full_trig, LED_FULL);
	42	led_trigger_event(psy->charging_trig, LED_FULL);
	43	led_trigger_event(psy->full_trig, LED_OFF);
6501f728 VK	44	led_trigger_blink(psy->charging_blink_full_solid_trig,
6501f728 VK	45	&delay_on, &delay_off);
4a11b59d AV	46	break;
	47	default:
	48	led_trigger_event(psy->charging_full_trig, LED_OFF);
	49	led_trigger_event(psy->charging_trig, LED_OFF);
	50	led_trigger_event(psy->full_trig, LED_OFF);
6501f728 VK	51	led_trigger_event(psy->charging_blink_full_solid_trig,
6501f728 VK	52	LED_OFF);
4a11b59d AV	53	break;
4a11b59d AV	54	}
4a11b59d AV	55	}
	56
	57	static int power_supply_create_bat_triggers(struct power_supply *psy)
	58	{
	59	int rc = 0;
	60
4d24473c AM	61	psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
4d24473c AM	62	"%s-charging-or-full", psy->name);
4a11b59d AV	63	if (!psy->charging_full_trig_name)
	64	goto charging_full_failed;
	65
4d24473c AM	66	psy->charging_trig_name = kasprintf(GFP_KERNEL,
4d24473c AM	67	"%s-charging", psy->name);
4a11b59d AV	68	if (!psy->charging_trig_name)
	69	goto charging_failed;
	70
4d24473c	71	psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name);
4a11b59d AV	72	if (!psy->full_trig_name)
	73	goto full_failed;
	74
6501f728 VK	75	psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL,
	76	"%s-charging-blink-full-solid", psy->name);
	77	if (!psy->charging_blink_full_solid_trig_name)
	78	goto charging_blink_full_solid_failed;
	79
4a11b59d AV	80	led_trigger_register_simple(psy->charging_full_trig_name,
	81	&psy->charging_full_trig);
	82	led_trigger_register_simple(psy->charging_trig_name,
	83	&psy->charging_trig);
	84	led_trigger_register_simple(psy->full_trig_name,
	85	&psy->full_trig);
6501f728 VK	86	led_trigger_register_simple(psy->charging_blink_full_solid_trig_name,
6501f728 VK	87	&psy->charging_blink_full_solid_trig);
4a11b59d AV	88
	89	goto success;
	90
6501f728 VK	91	charging_blink_full_solid_failed:
6501f728 VK	92	kfree(psy->full_trig_name);
4a11b59d AV	93	full_failed:
	94	kfree(psy->charging_trig_name);
	95	charging_failed:
	96	kfree(psy->charging_full_trig_name);
	97	charging_full_failed:
	98	rc = -ENOMEM;
	99	success:
	100	return rc;
	101	}
	102
	103	static void power_supply_remove_bat_triggers(struct power_supply *psy)
	104	{
	105	led_trigger_unregister_simple(psy->charging_full_trig);
	106	led_trigger_unregister_simple(psy->charging_trig);
	107	led_trigger_unregister_simple(psy->full_trig);
6501f728 VK	108	led_trigger_unregister_simple(psy->charging_blink_full_solid_trig);
6501f728 VK	109	kfree(psy->charging_blink_full_solid_trig_name);
4a11b59d AV	110	kfree(psy->full_trig_name);
	111	kfree(psy->charging_trig_name);
	112	kfree(psy->charging_full_trig_name);
4a11b59d AV	113	}
	114
	115	/* Generated power specific LEDs triggers. */
	116
	117	static void power_supply_update_gen_leds(struct power_supply *psy)
	118	{
	119	union power_supply_propval online;
	120
	121	if (psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &online))
	122	return;
	123
0cddc0a9	124	dev_dbg(psy->dev, "%s %d\n", __func__, online.intval);
4a11b59d AV	125
	126	if (online.intval)
	127	led_trigger_event(psy->online_trig, LED_FULL);
	128	else
	129	led_trigger_event(psy->online_trig, LED_OFF);
4a11b59d AV	130	}
	131
	132	static int power_supply_create_gen_triggers(struct power_supply *psy)
	133	{
	134	int rc = 0;
	135
4d24473c	136	psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name);
4a11b59d AV	137	if (!psy->online_trig_name)
	138	goto online_failed;
	139
4a11b59d AV	140	led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
	141
	142	goto success;
	143
	144	online_failed:
	145	rc = -ENOMEM;
	146	success:
	147	return rc;
	148	}
	149
	150	static void power_supply_remove_gen_triggers(struct power_supply *psy)
	151	{
	152	led_trigger_unregister_simple(psy->online_trig);
	153	kfree(psy->online_trig_name);
4a11b59d AV	154	}
	155
	156	/* Choice what triggers to create&update. */
	157
	158	void power_supply_update_leds(struct power_supply *psy)
	159	{
	160	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	161	power_supply_update_bat_leds(psy);
	162	else
	163	power_supply_update_gen_leds(psy);
4a11b59d AV	164	}
	165
	166	int power_supply_create_triggers(struct power_supply *psy)
	167	{
	168	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	169	return power_supply_create_bat_triggers(psy);
	170	return power_supply_create_gen_triggers(psy);
	171	}
	172
	173	void power_supply_remove_triggers(struct power_supply *psy)
	174	{
	175	if (psy->type == POWER_SUPPLY_TYPE_BATTERY)
	176	power_supply_remove_bat_triggers(psy);
	177	else
	178	power_supply_remove_gen_triggers(psy);
4a11b59d	179	}