[deliverable/linux.git] / drivers / power / pcf50633-charger.c

/* NXP PCF50633 Main Battery Charger Driver
 *
 * (C) 2006-2008 by Openmoko, Inc.
 * Author: Balaji Rao <balajirrao@openmoko.org>
 * All rights reserved.
 *
 * Broken down from monstrous PCF50633 driver mainly by
 * Harald Welte, Andy Green and Werner Almesberger
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/device.h>
#include <linux/sysfs.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>

#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/mbc.h>

struct pcf50633_mbc {
	struct pcf50633 *pcf;

	int adapter_active;
	int adapter_online;
	int usb_active;
	int usb_online;

	struct power_supply usb;
	struct power_supply adapter;

	struct delayed_work charging_restart_work;
};

int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
{
	struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
	int ret = 0;
	u8 bits;
	int charging_start = 1;
	u8 mbcs2, chgmod;

	if (ma >= 1000)
		bits = PCF50633_MBCC7_USB_1000mA;
	else if (ma >= 500)
		bits = PCF50633_MBCC7_USB_500mA;
	else if (ma >= 100)
		bits = PCF50633_MBCC7_USB_100mA;
	else {
		bits = PCF50633_MBCC7_USB_SUSPEND;
		charging_start = 0;
	}

	ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
					PCF50633_MBCC7_USB_MASK, bits);
	if (ret)
		dev_err(pcf->dev, "error setting usb curlim to %d mA\n", ma);
	else
		dev_info(pcf->dev, "usb curlim to %d mA\n", ma);

	/* Manual charging start */
	mbcs2 = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
	chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);

	/* If chgmod == BATFULL, setting chgena has no effect.
	 * We need to set resume instead.
	 */
	if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
				PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
	else
		pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
				PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);

	mbc->usb_active = charging_start;

	power_supply_changed(&mbc->usb);

	return ret;
}
EXPORT_SYMBOL_GPL(pcf50633_mbc_usb_curlim_set);

int pcf50633_mbc_get_status(struct pcf50633 *pcf)
{
	struct pcf50633_mbc *mbc  = platform_get_drvdata(pcf->mbc_pdev);
	int status = 0;

	if (mbc->usb_online)
		status |= PCF50633_MBC_USB_ONLINE;
	if (mbc->usb_active)
		status |= PCF50633_MBC_USB_ACTIVE;
	if (mbc->adapter_online)
		status |= PCF50633_MBC_ADAPTER_ONLINE;
	if (mbc->adapter_active)
		status |= PCF50633_MBC_ADAPTER_ACTIVE;

	return status;
}
EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status);

static ssize_t
show_chgmode(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct pcf50633_mbc *mbc = dev_get_drvdata(dev);

	u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
	u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);

	return sprintf(buf, "%d\n", chgmod);
}
static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL);

static ssize_t
show_usblim(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
	u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
						PCF50633_MBCC7_USB_MASK;
	unsigned int ma;

	if (usblim == PCF50633_MBCC7_USB_1000mA)
		ma = 1000;
	else if (usblim == PCF50633_MBCC7_USB_500mA)
		ma = 500;
	else if (usblim == PCF50633_MBCC7_USB_100mA)
		ma = 100;
	else
		ma = 0;

	return sprintf(buf, "%u\n", ma);
}

static ssize_t set_usblim(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{
	struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
	unsigned long ma;
	int ret;

	ret = strict_strtoul(buf, 10, &ma);
	if (ret)
		return -EINVAL;

	pcf50633_mbc_usb_curlim_set(mbc->pcf, ma);

	return count;
}

static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, set_usblim);

static struct attribute *pcf50633_mbc_sysfs_entries[] = {
	&dev_attr_chgmode.attr,
	&dev_attr_usb_curlim.attr,
	NULL,
};

static struct attribute_group mbc_attr_group = {
	.name	= NULL,			/* put in device directory */
	.attrs	= pcf50633_mbc_sysfs_entries,
};

/* MBC state machine switches into charging mode when the battery voltage
 * falls below 96% of a battery float voltage. But the voltage drop in Li-ion
 * batteries is marginal(1~2 %) till about 80% of its capacity - which means,
 * after a BATFULL, charging won't be restarted until 80%.
 *
 * This work_struct function restarts charging at regular intervals to make
 * sure we don't discharge too much
 */

static void pcf50633_mbc_charging_restart(struct work_struct *work)
{
	struct pcf50633_mbc *mbc;
	u8 mbcs2, chgmod;

	mbc = container_of(work, struct pcf50633_mbc,
				charging_restart_work.work);

	mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
	chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);

	if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
		return;

	/* Restart charging */
	pcf50633_reg_set_bit_mask(mbc->pcf, PCF50633_REG_MBCC1,
				PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);
	mbc->usb_active = 1;
	power_supply_changed(&mbc->usb);

	dev_info(mbc->pcf->dev, "Charging restarted\n");
}

static void
pcf50633_mbc_irq_handler(int irq, void *data)
{
	struct pcf50633_mbc *mbc = data;
	int chg_restart_interval =
			mbc->pcf->pdata->charging_restart_interval;

	/* USB */
	if (irq == PCF50633_IRQ_USBINS) {
		mbc->usb_online = 1;
	} else if (irq == PCF50633_IRQ_USBREM) {
		mbc->usb_online = 0;
		mbc->usb_active = 0;
		pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);
		cancel_delayed_work_sync(&mbc->charging_restart_work);
	}

	/* Adapter */
	if (irq == PCF50633_IRQ_ADPINS) {
		mbc->adapter_online = 1;
		mbc->adapter_active = 1;
	} else if (irq == PCF50633_IRQ_ADPREM) {
		mbc->adapter_online = 0;
		mbc->adapter_active = 0;
	}

	if (irq == PCF50633_IRQ_BATFULL) {
		mbc->usb_active = 0;
		mbc->adapter_active = 0;

		if (chg_restart_interval > 0)
			schedule_delayed_work(&mbc->charging_restart_work,
							chg_restart_interval);
	} else if (irq == PCF50633_IRQ_USBLIMON)
		mbc->usb_active = 0;
	else if (irq == PCF50633_IRQ_USBLIMOFF)
		mbc->usb_active = 1;

	power_supply_changed(&mbc->usb);
	power_supply_changed(&mbc->adapter);

	if (mbc->pcf->pdata->mbc_event_callback)
		mbc->pcf->pdata->mbc_event_callback(mbc->pcf, irq);
}

static int adapter_get_property(struct power_supply *psy,
			enum power_supply_property psp,
			union power_supply_propval *val)
{
	struct pcf50633_mbc *mbc = container_of(psy,
				struct pcf50633_mbc, adapter);
	int ret = 0;

	switch (psp) {
	case POWER_SUPPLY_PROP_ONLINE:
		val->intval =  mbc->adapter_online;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}

static int usb_get_property(struct power_supply *psy,
			enum power_supply_property psp,
			union power_supply_propval *val)
{
	struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
	int ret = 0;

	switch (psp) {
	case POWER_SUPPLY_PROP_ONLINE:
		val->intval = mbc->usb_online;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}

static enum power_supply_property power_props[] = {
	POWER_SUPPLY_PROP_ONLINE,
};

static const u8 mbc_irq_handlers[] = {
	PCF50633_IRQ_ADPINS,
	PCF50633_IRQ_ADPREM,
	PCF50633_IRQ_USBINS,
	PCF50633_IRQ_USBREM,
	PCF50633_IRQ_BATFULL,
	PCF50633_IRQ_CHGHALT,
	PCF50633_IRQ_THLIMON,
	PCF50633_IRQ_THLIMOFF,
	PCF50633_IRQ_USBLIMON,
	PCF50633_IRQ_USBLIMOFF,
	PCF50633_IRQ_LOWSYS,
	PCF50633_IRQ_LOWBAT,
};

static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
{
	struct pcf50633_mbc *mbc;
	struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data;
	int ret;
	int i;
	u8 mbcs1;

	mbc = kzalloc(sizeof(*mbc), GFP_KERNEL);
	if (!mbc)
		return -ENOMEM;

	platform_set_drvdata(pdev, mbc);
	mbc->pcf = pdata->pcf;

	/* Set up IRQ handlers */
	for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
		pcf50633_register_irq(mbc->pcf, mbc_irq_handlers[i],
					pcf50633_mbc_irq_handler, mbc);

	/* Create power supplies */
	mbc->adapter.name		= "adapter";
	mbc->adapter.type		= POWER_SUPPLY_TYPE_MAINS;
	mbc->adapter.properties		= power_props;
	mbc->adapter.num_properties	= ARRAY_SIZE(power_props);
	mbc->adapter.get_property	= &adapter_get_property;
	mbc->adapter.supplied_to	= mbc->pcf->pdata->batteries;
	mbc->adapter.num_supplicants	= mbc->pcf->pdata->num_batteries;

	mbc->usb.name			= "usb";
	mbc->usb.type			= POWER_SUPPLY_TYPE_USB;
	mbc->usb.properties		= power_props;
	mbc->usb.num_properties		= ARRAY_SIZE(power_props);
	mbc->usb.get_property		= usb_get_property;
	mbc->usb.supplied_to		= mbc->pcf->pdata->batteries;
	mbc->usb.num_supplicants	= mbc->pcf->pdata->num_batteries;

	ret = power_supply_register(&pdev->dev, &mbc->adapter);
	if (ret) {
		dev_err(mbc->pcf->dev, "failed to register adapter\n");
		kfree(mbc);
		return ret;
	}

	ret = power_supply_register(&pdev->dev, &mbc->usb);
	if (ret) {
		dev_err(mbc->pcf->dev, "failed to register usb\n");
		power_supply_unregister(&mbc->adapter);
		kfree(mbc);
		return ret;
	}

	INIT_DELAYED_WORK(&mbc->charging_restart_work,
				pcf50633_mbc_charging_restart);

	ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
	if (ret)
		dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");

	mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1);
	if (mbcs1 & PCF50633_MBCS1_USBPRES)
		pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc);
	if (mbcs1 & PCF50633_MBCS1_ADAPTPRES)
		pcf50633_mbc_irq_handler(PCF50633_IRQ_ADPINS, mbc);

	return 0;
}

static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
{
	struct pcf50633_mbc *mbc = platform_get_drvdata(pdev);
	int i;

	/* Remove IRQ handlers */
	for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
		pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);

	power_supply_unregister(&mbc->usb);
	power_supply_unregister(&mbc->adapter);

	cancel_delayed_work_sync(&mbc->charging_restart_work);

	kfree(mbc);

	return 0;
}

static struct platform_driver pcf50633_mbc_driver = {
	.driver = {
		.name = "pcf50633-mbc",
	},
	.probe = pcf50633_mbc_probe,
	.remove = __devexit_p(pcf50633_mbc_remove),
};

static int __init pcf50633_mbc_init(void)
{
	return platform_driver_register(&pcf50633_mbc_driver);
}
module_init(pcf50633_mbc_init);

static void __exit pcf50633_mbc_exit(void)
{
	platform_driver_unregister(&pcf50633_mbc_driver);
}
module_exit(pcf50633_mbc_exit);

MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
MODULE_DESCRIPTION("PCF50633 mbc driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:pcf50633-mbc");
Commit	Line	Data
f5714dc9 BR	1	/* NXP PCF50633 Main Battery Charger Driver
	2	*
	3	* (C) 2006-2008 by Openmoko, Inc.
	4	* Author: Balaji Rao <balajirrao@openmoko.org>
	5	* All rights reserved.
	6	*
	7	* Broken down from monstrous PCF50633 driver mainly by
	8	* Harald Welte, Andy Green and Werner Almesberger
	9	*
	10	* This program is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by the
	12	* Free Software Foundation; either version 2 of the License, or (at your
	13	* option) any later version.
	14	*
	15	*/
	16
	17	#include <linux/kernel.h>
	18	#include <linux/module.h>
	19	#include <linux/init.h>
	20	#include <linux/types.h>
	21	#include <linux/device.h>
	22	#include <linux/sysfs.h>
	23	#include <linux/platform_device.h>
	24	#include <linux/power_supply.h>
	25
	26	#include <linux/mfd/pcf50633/core.h>
	27	#include <linux/mfd/pcf50633/mbc.h>
	28
	29	struct pcf50633_mbc {
	30	struct pcf50633 *pcf;
	31
	32	int adapter_active;
	33	int adapter_online;
	34	int usb_active;
	35	int usb_online;
	36
	37	struct power_supply usb;
	38	struct power_supply adapter;
9705ecc5 BR	39
9705ecc5 BR	40	struct delayed_work charging_restart_work;
f5714dc9 BR	41	};
	42
	43	int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
	44	{
	45	struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
	46	int ret = 0;
	47	u8 bits;
9705ecc5 BR	48	int charging_start = 1;
9705ecc5 BR	49	u8 mbcs2, chgmod;
f5714dc9 BR	50
	51	if (ma >= 1000)
	52	bits = PCF50633_MBCC7_USB_1000mA;
	53	else if (ma >= 500)
	54	bits = PCF50633_MBCC7_USB_500mA;
	55	else if (ma >= 100)
	56	bits = PCF50633_MBCC7_USB_100mA;
9705ecc5	57	else {
f5714dc9	58	bits = PCF50633_MBCC7_USB_SUSPEND;
9705ecc5 BR	59	charging_start = 0;
9705ecc5 BR	60	}
f5714dc9 BR	61
	62	ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
	63	PCF50633_MBCC7_USB_MASK, bits);
	64	if (ret)
	65	dev_err(pcf->dev, "error setting usb curlim to %d mA\n", ma);
	66	else
	67	dev_info(pcf->dev, "usb curlim to %d mA\n", ma);
	68
9705ecc5 BR	69	/* Manual charging start */
	70	mbcs2 = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
	71	chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
	72
	73	/* If chgmod == BATFULL, setting chgena has no effect.
	74	* We need to set resume instead.
	75	*/
	76	if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
	77	pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
	78	PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
	79	else
	80	pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
	81	PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);
	82
	83	mbc->usb_active = charging_start;
	84
f5714dc9 BR	85	power_supply_changed(&mbc->usb);
	86
	87	return ret;
	88	}
	89	EXPORT_SYMBOL_GPL(pcf50633_mbc_usb_curlim_set);
	90
	91	int pcf50633_mbc_get_status(struct pcf50633 *pcf)
	92	{
	93	struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
	94	int status = 0;
	95
	96	if (mbc->usb_online)
	97	status \|= PCF50633_MBC_USB_ONLINE;
	98	if (mbc->usb_active)
	99	status \|= PCF50633_MBC_USB_ACTIVE;
	100	if (mbc->adapter_online)
	101	status \|= PCF50633_MBC_ADAPTER_ONLINE;
	102	if (mbc->adapter_active)
	103	status \|= PCF50633_MBC_ADAPTER_ACTIVE;
	104
	105	return status;
	106	}
	107	EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status);
	108
f5714dc9 BR	109	static ssize_t
	110	show_chgmode(struct device dev, struct device_attribute attr, char *buf)
	111	{
	112	struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
	113
	114	u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
	115	u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
	116
	117	return sprintf(buf, "%d\n", chgmod);
	118	}
	119	static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL);
	120
	121	static ssize_t
	122	show_usblim(struct device dev, struct device_attribute attr, char *buf)
	123	{
	124	struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
	125	u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
	126	PCF50633_MBCC7_USB_MASK;
	127	unsigned int ma;
	128
	129	if (usblim == PCF50633_MBCC7_USB_1000mA)
	130	ma = 1000;
	131	else if (usblim == PCF50633_MBCC7_USB_500mA)
	132	ma = 500;
	133	else if (usblim == PCF50633_MBCC7_USB_100mA)
	134	ma = 100;
	135	else
	136	ma = 0;
	137
	138	return sprintf(buf, "%u\n", ma);
	139	}
	140
	141	static ssize_t set_usblim(struct device *dev,
	142	struct device_attribute attr, const char buf, size_t count)
	143	{
	144	struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
	145	unsigned long ma;
	146	int ret;
	147
	148	ret = strict_strtoul(buf, 10, &ma);
	149	if (ret)
	150	return -EINVAL;
	151
	152	pcf50633_mbc_usb_curlim_set(mbc->pcf, ma);
	153
	154	return count;
	155	}
	156
	157	static DEVICE_ATTR(usb_curlim, S_IRUGO \| S_IWUSR, show_usblim, set_usblim);
	158
	159	static struct attribute *pcf50633_mbc_sysfs_entries[] = {
	160	&dev_attr_chgmode.attr,
	161	&dev_attr_usb_curlim.attr,
	162	NULL,
	163	};
	164
	165	static struct attribute_group mbc_attr_group = {
	166	.name = NULL, /* put in device directory */
	167	.attrs = pcf50633_mbc_sysfs_entries,
	168	};
	169
9705ecc5 BR	170	/* MBC state machine switches into charging mode when the battery voltage
	171	* falls below 96% of a battery float voltage. But the voltage drop in Li-ion
	172	* batteries is marginal(1~2 %) till about 80% of its capacity - which means,
	173	* after a BATFULL, charging won't be restarted until 80%.
	174	*
	175	* This work_struct function restarts charging at regular intervals to make
	176	* sure we don't discharge too much
	177	*/
	178
	179	static void pcf50633_mbc_charging_restart(struct work_struct *work)
	180	{
	181	struct pcf50633_mbc *mbc;
	182	u8 mbcs2, chgmod;
	183
	184	mbc = container_of(work, struct pcf50633_mbc,
	185	charging_restart_work.work);
	186
	187	mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
	188	chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
	189
	190	if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
	191	return;
	192
	193	/* Restart charging */
	194	pcf50633_reg_set_bit_mask(mbc->pcf, PCF50633_REG_MBCC1,
	195	PCF50633_MBCC1_RESUME, PCF50633_MBCC1_RESUME);
	196	mbc->usb_active = 1;
	197	power_supply_changed(&mbc->usb);
	198
	199	dev_info(mbc->pcf->dev, "Charging restarted\n");
	200	}
	201
f5714dc9 BR	202	static void
	203	pcf50633_mbc_irq_handler(int irq, void *data)
	204	{
	205	struct pcf50633_mbc *mbc = data;
9705ecc5 BR	206	int chg_restart_interval =
9705ecc5 BR	207	mbc->pcf->pdata->charging_restart_interval;
f5714dc9 BR	208
	209	/* USB */
	210	if (irq == PCF50633_IRQ_USBINS) {
	211	mbc->usb_online = 1;
	212	} else if (irq == PCF50633_IRQ_USBREM) {
	213	mbc->usb_online = 0;
	214	mbc->usb_active = 0;
	215	pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);
9705ecc5	216	cancel_delayed_work_sync(&mbc->charging_restart_work);
f5714dc9 BR	217	}
	218
	219	/* Adapter */
	220	if (irq == PCF50633_IRQ_ADPINS) {
	221	mbc->adapter_online = 1;
	222	mbc->adapter_active = 1;
	223	} else if (irq == PCF50633_IRQ_ADPREM) {
	224	mbc->adapter_online = 0;
	225	mbc->adapter_active = 0;
	226	}
	227
	228	if (irq == PCF50633_IRQ_BATFULL) {
	229	mbc->usb_active = 0;
	230	mbc->adapter_active = 0;
9705ecc5 BR	231
	232	if (chg_restart_interval > 0)
	233	schedule_delayed_work(&mbc->charging_restart_work,
	234	chg_restart_interval);
	235	} else if (irq == PCF50633_IRQ_USBLIMON)
	236	mbc->usb_active = 0;
	237	else if (irq == PCF50633_IRQ_USBLIMOFF)
	238	mbc->usb_active = 1;
f5714dc9 BR	239
	240	power_supply_changed(&mbc->usb);
	241	power_supply_changed(&mbc->adapter);
	242
	243	if (mbc->pcf->pdata->mbc_event_callback)
	244	mbc->pcf->pdata->mbc_event_callback(mbc->pcf, irq);
	245	}
	246
	247	static int adapter_get_property(struct power_supply *psy,
	248	enum power_supply_property psp,
	249	union power_supply_propval *val)
	250	{
ccc9c8b9 BR	251	struct pcf50633_mbc *mbc = container_of(psy,
ccc9c8b9 BR	252	struct pcf50633_mbc, adapter);
f5714dc9 BR	253	int ret = 0;
	254
	255	switch (psp) {
	256	case POWER_SUPPLY_PROP_ONLINE:
	257	val->intval = mbc->adapter_online;
	258	break;
	259	default:
	260	ret = -EINVAL;
	261	break;
	262	}
	263	return ret;
	264	}
	265
	266	static int usb_get_property(struct power_supply *psy,
	267	enum power_supply_property psp,
	268	union power_supply_propval *val)
	269	{
	270	struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
	271	int ret = 0;
	272
	273	switch (psp) {
	274	case POWER_SUPPLY_PROP_ONLINE:
	275	val->intval = mbc->usb_online;
	276	break;
	277	default:
	278	ret = -EINVAL;
	279	break;
	280	}
	281	return ret;
	282	}
	283
	284	static enum power_supply_property power_props[] = {
	285	POWER_SUPPLY_PROP_ONLINE,
	286	};
	287
	288	static const u8 mbc_irq_handlers[] = {
	289	PCF50633_IRQ_ADPINS,
	290	PCF50633_IRQ_ADPREM,
	291	PCF50633_IRQ_USBINS,
	292	PCF50633_IRQ_USBREM,
	293	PCF50633_IRQ_BATFULL,
	294	PCF50633_IRQ_CHGHALT,
	295	PCF50633_IRQ_THLIMON,
	296	PCF50633_IRQ_THLIMOFF,
	297	PCF50633_IRQ_USBLIMON,
	298	PCF50633_IRQ_USBLIMOFF,
	299	PCF50633_IRQ_LOWSYS,
	300	PCF50633_IRQ_LOWBAT,
	301	};
	302
	303	static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
	304	{
	305	struct pcf50633_mbc *mbc;
	306	struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data;
	307	int ret;
	308	int i;
	309	u8 mbcs1;
	310
	311	mbc = kzalloc(sizeof(*mbc), GFP_KERNEL);
	312	if (!mbc)
	313	return -ENOMEM;
	314
	315	platform_set_drvdata(pdev, mbc);
	316	mbc->pcf = pdata->pcf;
317
318	/* Set up IRQ handlers */
319	for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
320	pcf50633_register_irq(mbc->pcf, mbc_irq_handlers[i],
321	pcf50633_mbc_irq_handler, mbc);
322
323	/* Create power supplies */
324	mbc->adapter.name = "adapter";
325	mbc->adapter.type = POWER_SUPPLY_TYPE_MAINS;
326	mbc->adapter.properties = power_props;
327	mbc->adapter.num_properties = ARRAY_SIZE(power_props);
328	mbc->adapter.get_property = &adapter_get_property;
329	mbc->adapter.supplied_to = mbc->pcf->pdata->batteries;
330	mbc->adapter.num_supplicants = mbc->pcf->pdata->num_batteries;
331
332	mbc->usb.name = "usb";
333	mbc->usb.type = POWER_SUPPLY_TYPE_USB;
334	mbc->usb.properties = power_props;
335	mbc->usb.num_properties = ARRAY_SIZE(power_props);
336	mbc->usb.get_property = usb_get_property;
337	mbc->usb.supplied_to = mbc->pcf->pdata->batteries;
338	mbc->usb.num_supplicants = mbc->pcf->pdata->num_batteries;
339
340	ret = power_supply_register(&pdev->dev, &mbc->adapter);
341	if (ret) {
342	dev_err(mbc->pcf->dev, "failed to register adapter\n");
343	kfree(mbc);
344	return ret;
345	}
346
347	ret = power_supply_register(&pdev->dev, &mbc->usb);
348	if (ret) {
349	dev_err(mbc->pcf->dev, "failed to register usb\n");
350	power_supply_unregister(&mbc->adapter);
351	kfree(mbc);
352	return ret;
353	}
354
9705ecc5 BR	355	INIT_DELAYED_WORK(&mbc->charging_restart_work,
	356	pcf50633_mbc_charging_restart);
	357
f5714dc9 BR	358	ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
	359	if (ret)
	360	dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");
	361
	362	mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1);
	363	if (mbcs1 & PCF50633_MBCS1_USBPRES)
	364	pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc);
	365	if (mbcs1 & PCF50633_MBCS1_ADAPTPRES)
	366	pcf50633_mbc_irq_handler(PCF50633_IRQ_ADPINS, mbc);
	367
	368	return 0;
	369	}
	370
	371	static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
	372	{
	373	struct pcf50633_mbc *mbc = platform_get_drvdata(pdev);
	374	int i;
	375
	376	/* Remove IRQ handlers */
	377	for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
	378	pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
	379
	380	power_supply_unregister(&mbc->usb);
	381	power_supply_unregister(&mbc->adapter);
	382
9705ecc5 BR	383	cancel_delayed_work_sync(&mbc->charging_restart_work);
9705ecc5 BR	384
f5714dc9 BR	385	kfree(mbc);
	386
	387	return 0;
	388	}
	389
	390	static struct platform_driver pcf50633_mbc_driver = {
	391	.driver = {
	392	.name = "pcf50633-mbc",
	393	},
	394	.probe = pcf50633_mbc_probe,
	395	.remove = __devexit_p(pcf50633_mbc_remove),
	396	};
	397
	398	static int __init pcf50633_mbc_init(void)
	399	{
	400	return platform_driver_register(&pcf50633_mbc_driver);
	401	}
	402	module_init(pcf50633_mbc_init);
	403
	404	static void __exit pcf50633_mbc_exit(void)
	405	{
	406	platform_driver_unregister(&pcf50633_mbc_driver);
	407	}
	408	module_exit(pcf50633_mbc_exit);
	409
	410	MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
	411	MODULE_DESCRIPTION("PCF50633 mbc driver");
	412	MODULE_LICENSE("GPL");
	413	MODULE_ALIAS("platform:pcf50633-mbc");