[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / power / tosa_battery.c

/*
 * Battery and Power Management code for the Sharp SL-6000x
 *
 * Copyright (c) 2005 Dirk Opfer
 * Copyright (c) 2008 Dmitry Baryshkov
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/power_supply.h>
#include <linux/wm97xx.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>

#include <asm/mach-types.h>
#include <mach/tosa.h>

static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
static struct work_struct bat_work;

struct tosa_bat {
	int status;
	struct power_supply psy;
	int full_chrg;

	struct mutex work_lock; /* protects data */

	bool (*is_present)(struct tosa_bat *bat);
	int gpio_full;
	int gpio_charge_off;

	int technology;

	int gpio_bat;
	int adc_bat;
	int adc_bat_divider;
	int bat_max;
	int bat_min;

	int gpio_temp;
	int adc_temp;
	int adc_temp_divider;
};

static struct tosa_bat tosa_bat_main;
static struct tosa_bat tosa_bat_jacket;

static unsigned long tosa_read_bat(struct tosa_bat *bat)
{
	unsigned long value = 0;

	if (bat->gpio_bat < 0 || bat->adc_bat < 0)
		return 0;

	mutex_lock(&bat_lock);
	gpio_set_value(bat->gpio_bat, 1);
	msleep(5);
	value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy.dev->parent),
			bat->adc_bat);
	gpio_set_value(bat->gpio_bat, 0);
	mutex_unlock(&bat_lock);

	value = value * 1000000 / bat->adc_bat_divider;

	return value;
}

static unsigned long tosa_read_temp(struct tosa_bat *bat)
{
	unsigned long value = 0;

	if (bat->gpio_temp < 0 || bat->adc_temp < 0)
		return 0;

	mutex_lock(&bat_lock);
	gpio_set_value(bat->gpio_temp, 1);
	msleep(5);
	value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy.dev->parent),
			bat->adc_temp);
	gpio_set_value(bat->gpio_temp, 0);
	mutex_unlock(&bat_lock);

	value = value * 10000 / bat->adc_temp_divider;

	return value;
}

static int tosa_bat_get_property(struct power_supply *psy,
			    enum power_supply_property psp,
			    union power_supply_propval *val)
{
	int ret = 0;
	struct tosa_bat *bat = container_of(psy, struct tosa_bat, psy);

	if (bat->is_present && !bat->is_present(bat)
			&& psp != POWER_SUPPLY_PROP_PRESENT) {
		return -ENODEV;
	}

	switch (psp) {
	case POWER_SUPPLY_PROP_STATUS:
		val->intval = bat->status;
		break;
	case POWER_SUPPLY_PROP_TECHNOLOGY:
		val->intval = bat->technology;
		break;
	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
		val->intval = tosa_read_bat(bat);
		break;
	case POWER_SUPPLY_PROP_VOLTAGE_MAX:
		if (bat->full_chrg == -1)
			val->intval = bat->bat_max;
		else
			val->intval = bat->full_chrg;
		break;
	case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
		val->intval = bat->bat_max;
		break;
	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
		val->intval = bat->bat_min;
		break;
	case POWER_SUPPLY_PROP_TEMP:
		val->intval = tosa_read_temp(bat);
		break;
	case POWER_SUPPLY_PROP_PRESENT:
		val->intval = bat->is_present ? bat->is_present(bat) : 1;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}

static bool tosa_jacket_bat_is_present(struct tosa_bat *bat)
{
	return gpio_get_value(TOSA_GPIO_JACKET_DETECT) == 0;
}

static void tosa_bat_external_power_changed(struct power_supply *psy)
{
	schedule_work(&bat_work);
}

static irqreturn_t tosa_bat_gpio_isr(int irq, void *data)
{
	pr_info("tosa_bat_gpio irq: %d\n", gpio_get_value(irq_to_gpio(irq)));
	schedule_work(&bat_work);
	return IRQ_HANDLED;
}

static void tosa_bat_update(struct tosa_bat *bat)
{
	int old;
	struct power_supply *psy = &bat->psy;

	mutex_lock(&bat->work_lock);

	old = bat->status;

	if (bat->is_present && !bat->is_present(bat)) {
		printk(KERN_NOTICE "%s not present\n", psy->name);
		bat->status = POWER_SUPPLY_STATUS_UNKNOWN;
		bat->full_chrg = -1;
	} else if (power_supply_am_i_supplied(psy)) {
		if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) {
			gpio_set_value(bat->gpio_charge_off, 0);
			mdelay(15);
		}

		if (gpio_get_value(bat->gpio_full)) {
			if (old == POWER_SUPPLY_STATUS_CHARGING ||
					bat->full_chrg == -1)
				bat->full_chrg = tosa_read_bat(bat);

			gpio_set_value(bat->gpio_charge_off, 1);
			bat->status = POWER_SUPPLY_STATUS_FULL;
		} else {
			gpio_set_value(bat->gpio_charge_off, 0);
			bat->status = POWER_SUPPLY_STATUS_CHARGING;
		}
	} else {
		gpio_set_value(bat->gpio_charge_off, 1);
		bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
	}

	if (old != bat->status)
		power_supply_changed(psy);

	mutex_unlock(&bat->work_lock);
}

static void tosa_bat_work(struct work_struct *work)
{
	tosa_bat_update(&tosa_bat_main);
	tosa_bat_update(&tosa_bat_jacket);
}


static enum power_supply_property tosa_bat_main_props[] = {
	POWER_SUPPLY_PROP_STATUS,
	POWER_SUPPLY_PROP_TECHNOLOGY,
	POWER_SUPPLY_PROP_VOLTAGE_NOW,
	POWER_SUPPLY_PROP_VOLTAGE_MAX,
	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
	POWER_SUPPLY_PROP_TEMP,
	POWER_SUPPLY_PROP_PRESENT,
};

static enum power_supply_property tosa_bat_bu_props[] = {
	POWER_SUPPLY_PROP_STATUS,
	POWER_SUPPLY_PROP_TECHNOLOGY,
	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
	POWER_SUPPLY_PROP_VOLTAGE_NOW,
	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
	POWER_SUPPLY_PROP_PRESENT,
};

static struct tosa_bat tosa_bat_main = {
	.status = POWER_SUPPLY_STATUS_DISCHARGING,
	.full_chrg = -1,
	.psy = {
		.name		= "main-battery",
		.type		= POWER_SUPPLY_TYPE_BATTERY,
		.properties	= tosa_bat_main_props,
		.num_properties	= ARRAY_SIZE(tosa_bat_main_props),
		.get_property	= tosa_bat_get_property,
		.external_power_changed = tosa_bat_external_power_changed,
		.use_for_apm	= 1,
	},

	.gpio_full = TOSA_GPIO_BAT0_CRG,
	.gpio_charge_off = TOSA_GPIO_CHARGE_OFF,

	.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,

	.gpio_bat = TOSA_GPIO_BAT0_V_ON,
	.adc_bat = WM97XX_AUX_ID3,
	.adc_bat_divider = 414,
	.bat_max = 4310000,
	.bat_min = 1551 * 1000000 / 414,

	.gpio_temp = TOSA_GPIO_BAT1_TH_ON,
	.adc_temp = WM97XX_AUX_ID2,
	.adc_temp_divider = 10000,
};

static struct tosa_bat tosa_bat_jacket = {
	.status = POWER_SUPPLY_STATUS_DISCHARGING,
	.full_chrg = -1,
	.psy = {
		.name		= "jacket-battery",
		.type		= POWER_SUPPLY_TYPE_BATTERY,
		.properties	= tosa_bat_main_props,
		.num_properties	= ARRAY_SIZE(tosa_bat_main_props),
		.get_property	= tosa_bat_get_property,
		.external_power_changed = tosa_bat_external_power_changed,
	},

	.is_present = tosa_jacket_bat_is_present,
	.gpio_full = TOSA_GPIO_BAT1_CRG,
	.gpio_charge_off = TOSA_GPIO_CHARGE_OFF_JC,

	.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,

	.gpio_bat = TOSA_GPIO_BAT1_V_ON,
	.adc_bat = WM97XX_AUX_ID3,
	.adc_bat_divider = 414,
	.bat_max = 4310000,
	.bat_min = 1551 * 1000000 / 414,

	.gpio_temp = TOSA_GPIO_BAT0_TH_ON,
	.adc_temp = WM97XX_AUX_ID2,
	.adc_temp_divider = 10000,
};

static struct tosa_bat tosa_bat_bu = {
	.status = POWER_SUPPLY_STATUS_UNKNOWN,
	.full_chrg = -1,

	.psy = {
		.name		= "backup-battery",
		.type		= POWER_SUPPLY_TYPE_BATTERY,
		.properties	= tosa_bat_bu_props,
		.num_properties	= ARRAY_SIZE(tosa_bat_bu_props),
		.get_property	= tosa_bat_get_property,
		.external_power_changed = tosa_bat_external_power_changed,
	},

	.gpio_full = -1,
	.gpio_charge_off = -1,

	.technology = POWER_SUPPLY_TECHNOLOGY_LiMn,

	.gpio_bat = TOSA_GPIO_BU_CHRG_ON,
	.adc_bat = WM97XX_AUX_ID4,
	.adc_bat_divider = 1266,

	.gpio_temp = -1,
	.adc_temp = -1,
	.adc_temp_divider = -1,
};

static struct gpio tosa_bat_gpios[] = {
	{ TOSA_GPIO_CHARGE_OFF,	   GPIOF_OUT_INIT_HIGH, "main charge off" },
	{ TOSA_GPIO_CHARGE_OFF_JC, GPIOF_OUT_INIT_HIGH, "jacket charge off" },
	{ TOSA_GPIO_BAT_SW_ON,	   GPIOF_OUT_INIT_LOW,	"battery switch" },
	{ TOSA_GPIO_BAT0_V_ON,	   GPIOF_OUT_INIT_LOW,	"main battery" },
	{ TOSA_GPIO_BAT1_V_ON,	   GPIOF_OUT_INIT_LOW,	"jacket battery" },
	{ TOSA_GPIO_BAT1_TH_ON,	   GPIOF_OUT_INIT_LOW,	"main battery temp" },
	{ TOSA_GPIO_BAT0_TH_ON,	   GPIOF_OUT_INIT_LOW,	"jacket battery temp" },
	{ TOSA_GPIO_BU_CHRG_ON,	   GPIOF_OUT_INIT_LOW,	"backup battery" },
	{ TOSA_GPIO_BAT0_CRG,	   GPIOF_IN,		"main battery full" },
	{ TOSA_GPIO_BAT1_CRG,	   GPIOF_IN,		"jacket battery full" },
	{ TOSA_GPIO_BAT0_LOW,	   GPIOF_IN,		"main battery low" },
	{ TOSA_GPIO_BAT1_LOW,	   GPIOF_IN,		"jacket battery low" },
	{ TOSA_GPIO_JACKET_DETECT, GPIOF_IN,		"jacket detect" },
};

#ifdef CONFIG_PM
static int tosa_bat_suspend(struct platform_device *dev, pm_message_t state)
{
	/* flush all pending status updates */
	flush_work(&bat_work);
	return 0;
}

static int tosa_bat_resume(struct platform_device *dev)
{
	/* things may have changed while we were away */
	schedule_work(&bat_work);
	return 0;
}
#else
#define tosa_bat_suspend NULL
#define tosa_bat_resume NULL
#endif

static int tosa_bat_probe(struct platform_device *dev)
{
	int ret;

	if (!machine_is_tosa())
		return -ENODEV;

	ret = gpio_request_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
	if (ret)
		return ret;

	mutex_init(&tosa_bat_main.work_lock);
	mutex_init(&tosa_bat_jacket.work_lock);

	INIT_WORK(&bat_work, tosa_bat_work);

	ret = power_supply_register(&dev->dev, &tosa_bat_main.psy);
	if (ret)
		goto err_psy_reg_main;
	ret = power_supply_register(&dev->dev, &tosa_bat_jacket.psy);
	if (ret)
		goto err_psy_reg_jacket;
	ret = power_supply_register(&dev->dev, &tosa_bat_bu.psy);
	if (ret)
		goto err_psy_reg_bu;

	ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG),
				tosa_bat_gpio_isr,
				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
				"main full", &tosa_bat_main);
	if (ret)
		goto err_req_main;

	ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG),
				tosa_bat_gpio_isr,
				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
				"jacket full", &tosa_bat_jacket);
	if (ret)
		goto err_req_jacket;

	ret = request_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT),
				tosa_bat_gpio_isr,
				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
				"jacket detect", &tosa_bat_jacket);
	if (!ret) {
		schedule_work(&bat_work);
		return 0;
	}

	free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket);
err_req_jacket:
	free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);
err_req_main:
	power_supply_unregister(&tosa_bat_bu.psy);
err_psy_reg_bu:
	power_supply_unregister(&tosa_bat_jacket.psy);
err_psy_reg_jacket:
	power_supply_unregister(&tosa_bat_main.psy);
err_psy_reg_main:

	/* see comment in tosa_bat_remove */
	cancel_work_sync(&bat_work);

	gpio_free_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
	return ret;
}

static int tosa_bat_remove(struct platform_device *dev)
{
	free_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT), &tosa_bat_jacket);
	free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket);
	free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);

	power_supply_unregister(&tosa_bat_bu.psy);
	power_supply_unregister(&tosa_bat_jacket.psy);
	power_supply_unregister(&tosa_bat_main.psy);

	/*
	 * Now cancel the bat_work.  We won't get any more schedules,
	 * since all sources (isr and external_power_changed) are
	 * unregistered now.
	 */
	cancel_work_sync(&bat_work);
	gpio_free_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
	return 0;
}

static struct platform_driver tosa_bat_driver = {
	.driver.name	= "wm97xx-battery",
	.driver.owner	= THIS_MODULE,
	.probe		= tosa_bat_probe,
	.remove		= tosa_bat_remove,
	.suspend	= tosa_bat_suspend,
	.resume		= tosa_bat_resume,
};

module_platform_driver(tosa_bat_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Dmitry Baryshkov");
MODULE_DESCRIPTION("Tosa battery driver");
MODULE_ALIAS("platform:wm97xx-battery");
Commit	Line	Data
fece4184 DES	1	/*
	2	* Battery and Power Management code for the Sharp SL-6000x
	3	*
	4	* Copyright (c) 2005 Dirk Opfer
	5	* Copyright (c) 2008 Dmitry Baryshkov
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*
	11	*/
	12	#include <linux/kernel.h>
	13	#include <linux/module.h>
	14	#include <linux/power_supply.h>
	15	#include <linux/wm97xx.h>
	16	#include <linux/delay.h>
	17	#include <linux/spinlock.h>
	18	#include <linux/interrupt.h>
	19	#include <linux/gpio.h>
	20
	21	#include <asm/mach-types.h>
a09e64fb	22	#include <mach/tosa.h>
fece4184 DES	23
	24	static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
	25	static struct work_struct bat_work;
	26
	27	struct tosa_bat {
	28	int status;
	29	struct power_supply psy;
	30	int full_chrg;
	31
	32	struct mutex work_lock; /* protects data */
	33
	34	bool (is_present)(struct tosa_bat bat);
	35	int gpio_full;
	36	int gpio_charge_off;
	37
	38	int technology;
	39
	40	int gpio_bat;
	41	int adc_bat;
	42	int adc_bat_divider;
	43	int bat_max;
	44	int bat_min;
	45
	46	int gpio_temp;
	47	int adc_temp;
	48	int adc_temp_divider;
	49	};
	50
	51	static struct tosa_bat tosa_bat_main;
	52	static struct tosa_bat tosa_bat_jacket;
	53
	54	static unsigned long tosa_read_bat(struct tosa_bat *bat)
	55	{
	56	unsigned long value = 0;
	57
	58	if (bat->gpio_bat < 0 \|\| bat->adc_bat < 0)
	59	return 0;
	60
	61	mutex_lock(&bat_lock);
	62	gpio_set_value(bat->gpio_bat, 1);
	63	msleep(5);
06b9e650	64	value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy.dev->parent),
fece4184 DES	65	bat->adc_bat);
	66	gpio_set_value(bat->gpio_bat, 0);
	67	mutex_unlock(&bat_lock);
	68
	69	value = value * 1000000 / bat->adc_bat_divider;
	70
	71	return value;
	72	}
	73
	74	static unsigned long tosa_read_temp(struct tosa_bat *bat)
	75	{
	76	unsigned long value = 0;
	77
	78	if (bat->gpio_temp < 0 \|\| bat->adc_temp < 0)
	79	return 0;
	80
	81	mutex_lock(&bat_lock);
	82	gpio_set_value(bat->gpio_temp, 1);
	83	msleep(5);
06b9e650	84	value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy.dev->parent),
fece4184 DES	85	bat->adc_temp);
	86	gpio_set_value(bat->gpio_temp, 0);
	87	mutex_unlock(&bat_lock);
	88
	89	value = value * 10000 / bat->adc_temp_divider;
	90
	91	return value;
	92	}
	93
	94	static int tosa_bat_get_property(struct power_supply *psy,
	95	enum power_supply_property psp,
	96	union power_supply_propval *val)
	97	{
	98	int ret = 0;
	99	struct tosa_bat *bat = container_of(psy, struct tosa_bat, psy);
	100
	101	if (bat->is_present && !bat->is_present(bat)
	102	&& psp != POWER_SUPPLY_PROP_PRESENT) {
	103	return -ENODEV;
	104	}
	105
	106	switch (psp) {
	107	case POWER_SUPPLY_PROP_STATUS:
	108	val->intval = bat->status;
	109	break;
	110	case POWER_SUPPLY_PROP_TECHNOLOGY:
	111	val->intval = bat->technology;
	112	break;
	113	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
	114	val->intval = tosa_read_bat(bat);
	115	break;
	116	case POWER_SUPPLY_PROP_VOLTAGE_MAX:
	117	if (bat->full_chrg == -1)
	118	val->intval = bat->bat_max;
	119	else
	120	val->intval = bat->full_chrg;
	121	break;
	122	case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
	123	val->intval = bat->bat_max;
	124	break;
	125	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
	126	val->intval = bat->bat_min;
	127	break;
	128	case POWER_SUPPLY_PROP_TEMP:
	129	val->intval = tosa_read_temp(bat);
	130	break;
	131	case POWER_SUPPLY_PROP_PRESENT:
	132	val->intval = bat->is_present ? bat->is_present(bat) : 1;
	133	break;
	134	default:
	135	ret = -EINVAL;
	136	break;
	137	}
	138	return ret;
	139	}
	140
	141	static bool tosa_jacket_bat_is_present(struct tosa_bat *bat)
	142	{
	143	return gpio_get_value(TOSA_GPIO_JACKET_DETECT) == 0;
	144	}
	145
	146	static void tosa_bat_external_power_changed(struct power_supply *psy)
	147	{
	148	schedule_work(&bat_work);
149	}
150
151	static irqreturn_t tosa_bat_gpio_isr(int irq, void *data)
152	{
153	pr_info("tosa_bat_gpio irq: %d\n", gpio_get_value(irq_to_gpio(irq)));
154	schedule_work(&bat_work);
155	return IRQ_HANDLED;
156	}
157
158	static void tosa_bat_update(struct tosa_bat *bat)
159	{
160	int old;
161	struct power_supply *psy = &bat->psy;
162
163	mutex_lock(&bat->work_lock);
164
165	old = bat->status;
166
167	if (bat->is_present && !bat->is_present(bat)) {
168	printk(KERN_NOTICE "%s not present\n", psy->name);
169	bat->status = POWER_SUPPLY_STATUS_UNKNOWN;
170	bat->full_chrg = -1;
171	} else if (power_supply_am_i_supplied(psy)) {
172	if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) {
173	gpio_set_value(bat->gpio_charge_off, 0);
174	mdelay(15);
175	}
176
177	if (gpio_get_value(bat->gpio_full)) {
178	if (old == POWER_SUPPLY_STATUS_CHARGING \|\|
179	bat->full_chrg == -1)
180	bat->full_chrg = tosa_read_bat(bat);
181
182	gpio_set_value(bat->gpio_charge_off, 1);
183	bat->status = POWER_SUPPLY_STATUS_FULL;
184	} else {
185	gpio_set_value(bat->gpio_charge_off, 0);
186	bat->status = POWER_SUPPLY_STATUS_CHARGING;
187	}
188	} else {
189	gpio_set_value(bat->gpio_charge_off, 1);
190	bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
191	}
192
193	if (old != bat->status)
194	power_supply_changed(psy);
195
196	mutex_unlock(&bat->work_lock);
197	}
198
199	static void tosa_bat_work(struct work_struct *work)
200	{
201	tosa_bat_update(&tosa_bat_main);
202	tosa_bat_update(&tosa_bat_jacket);
203	}
204
205
206	static enum power_supply_property tosa_bat_main_props[] = {
207	POWER_SUPPLY_PROP_STATUS,
208	POWER_SUPPLY_PROP_TECHNOLOGY,
209	POWER_SUPPLY_PROP_VOLTAGE_NOW,
210	POWER_SUPPLY_PROP_VOLTAGE_MAX,
211	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
212	POWER_SUPPLY_PROP_TEMP,
213	POWER_SUPPLY_PROP_PRESENT,
214	};
215
216	static enum power_supply_property tosa_bat_bu_props[] = {
217	POWER_SUPPLY_PROP_STATUS,
218	POWER_SUPPLY_PROP_TECHNOLOGY,
219	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
220	POWER_SUPPLY_PROP_VOLTAGE_NOW,
221	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
222	POWER_SUPPLY_PROP_PRESENT,
223	};
224
225	static struct tosa_bat tosa_bat_main = {
226	.status = POWER_SUPPLY_STATUS_DISCHARGING,
227	.full_chrg = -1,
228	.psy = {
229	.name = "main-battery",
230	.type = POWER_SUPPLY_TYPE_BATTERY,
231	.properties = tosa_bat_main_props,
232	.num_properties = ARRAY_SIZE(tosa_bat_main_props),
233	.get_property = tosa_bat_get_property,
234	.external_power_changed = tosa_bat_external_power_changed,
235	.use_for_apm = 1,
236	},
237
238	.gpio_full = TOSA_GPIO_BAT0_CRG,
239	.gpio_charge_off = TOSA_GPIO_CHARGE_OFF,
240
241	.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
242
243	.gpio_bat = TOSA_GPIO_BAT0_V_ON,
244	.adc_bat = WM97XX_AUX_ID3,
245	.adc_bat_divider = 414,
246	.bat_max = 4310000,
247	.bat_min = 1551 * 1000000 / 414,
248
249	.gpio_temp = TOSA_GPIO_BAT1_TH_ON,
250	.adc_temp = WM97XX_AUX_ID2,
251	.adc_temp_divider = 10000,
252	};
253
254	static struct tosa_bat tosa_bat_jacket = {
255	.status = POWER_SUPPLY_STATUS_DISCHARGING,
256	.full_chrg = -1,
257	.psy = {
258	.name = "jacket-battery",
259	.type = POWER_SUPPLY_TYPE_BATTERY,
260	.properties = tosa_bat_main_props,
261	.num_properties = ARRAY_SIZE(tosa_bat_main_props),
262	.get_property = tosa_bat_get_property,
263	.external_power_changed = tosa_bat_external_power_changed,
264	},
265
266	.is_present = tosa_jacket_bat_is_present,
267	.gpio_full = TOSA_GPIO_BAT1_CRG,
268	.gpio_charge_off = TOSA_GPIO_CHARGE_OFF_JC,
269
270	.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
271
272	.gpio_bat = TOSA_GPIO_BAT1_V_ON,
273	.adc_bat = WM97XX_AUX_ID3,
274	.adc_bat_divider = 414,
275	.bat_max = 4310000,
276	.bat_min = 1551 * 1000000 / 414,
277
278	.gpio_temp = TOSA_GPIO_BAT0_TH_ON,
279	.adc_temp = WM97XX_AUX_ID2,
280	.adc_temp_divider = 10000,
281	};
282
283	static struct tosa_bat tosa_bat_bu = {
284	.status = POWER_SUPPLY_STATUS_UNKNOWN,
285	.full_chrg = -1,
286
287	.psy = {
288	.name = "backup-battery",
289	.type = POWER_SUPPLY_TYPE_BATTERY,
290	.properties = tosa_bat_bu_props,
291	.num_properties = ARRAY_SIZE(tosa_bat_bu_props),
292	.get_property = tosa_bat_get_property,
293	.external_power_changed = tosa_bat_external_power_changed,
294	},
295
296	.gpio_full = -1,
297	.gpio_charge_off = -1,
298
299	.technology = POWER_SUPPLY_TECHNOLOGY_LiMn,
300
301	.gpio_bat = TOSA_GPIO_BU_CHRG_ON,
302	.adc_bat = WM97XX_AUX_ID4,
303	.adc_bat_divider = 1266,
304
305	.gpio_temp = -1,
306	.adc_temp = -1,
307	.adc_temp_divider = -1,
308	};
309
019370d3 AL	310	static struct gpio tosa_bat_gpios[] = {
	311	{ TOSA_GPIO_CHARGE_OFF, GPIOF_OUT_INIT_HIGH, "main charge off" },
	312	{ TOSA_GPIO_CHARGE_OFF_JC, GPIOF_OUT_INIT_HIGH, "jacket charge off" },
	313	{ TOSA_GPIO_BAT_SW_ON, GPIOF_OUT_INIT_LOW, "battery switch" },
	314	{ TOSA_GPIO_BAT0_V_ON, GPIOF_OUT_INIT_LOW, "main battery" },
	315	{ TOSA_GPIO_BAT1_V_ON, GPIOF_OUT_INIT_LOW, "jacket battery" },
	316	{ TOSA_GPIO_BAT1_TH_ON, GPIOF_OUT_INIT_LOW, "main battery temp" },
	317	{ TOSA_GPIO_BAT0_TH_ON, GPIOF_OUT_INIT_LOW, "jacket battery temp" },
	318	{ TOSA_GPIO_BU_CHRG_ON, GPIOF_OUT_INIT_LOW, "backup battery" },
	319	{ TOSA_GPIO_BAT0_CRG, GPIOF_IN, "main battery full" },
	320	{ TOSA_GPIO_BAT1_CRG, GPIOF_IN, "jacket battery full" },
	321	{ TOSA_GPIO_BAT0_LOW, GPIOF_IN, "main battery low" },
	322	{ TOSA_GPIO_BAT1_LOW, GPIOF_IN, "jacket battery low" },
	323	{ TOSA_GPIO_JACKET_DETECT, GPIOF_IN, "jacket detect" },
fece4184 DES	324	};
	325
	326	#ifdef CONFIG_PM
	327	static int tosa_bat_suspend(struct platform_device *dev, pm_message_t state)
	328	{
	329	/* flush all pending status updates */
43829731	330	flush_work(&bat_work);
fece4184 DES	331	return 0;
	332	}
	333
	334	static int tosa_bat_resume(struct platform_device *dev)
	335	{
	336	/* things may have changed while we were away */
	337	schedule_work(&bat_work);
	338	return 0;
	339	}
	340	#else
	341	#define tosa_bat_suspend NULL
	342	#define tosa_bat_resume NULL
	343	#endif
	344
c8afa640	345	static int tosa_bat_probe(struct platform_device *dev)
fece4184 DES	346	{
fece4184 DES	347	int ret;
fece4184 DES	348
	349	if (!machine_is_tosa())
	350	return -ENODEV;
	351
019370d3 AL	352	ret = gpio_request_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
	353	if (ret)
	354	return ret;
fece4184 DES	355
	356	mutex_init(&tosa_bat_main.work_lock);
	357	mutex_init(&tosa_bat_jacket.work_lock);
	358
	359	INIT_WORK(&bat_work, tosa_bat_work);
	360
	361	ret = power_supply_register(&dev->dev, &tosa_bat_main.psy);
	362	if (ret)
	363	goto err_psy_reg_main;
	364	ret = power_supply_register(&dev->dev, &tosa_bat_jacket.psy);
	365	if (ret)
	366	goto err_psy_reg_jacket;
	367	ret = power_supply_register(&dev->dev, &tosa_bat_bu.psy);
	368	if (ret)
	369	goto err_psy_reg_bu;
	370
	371	ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG),
	372	tosa_bat_gpio_isr,
	373	IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
	374	"main full", &tosa_bat_main);
	375	if (ret)
	376	goto err_req_main;
	377
	378	ret = request_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG),
	379	tosa_bat_gpio_isr,
	380	IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
	381	"jacket full", &tosa_bat_jacket);
	382	if (ret)
	383	goto err_req_jacket;
	384
	385	ret = request_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT),
	386	tosa_bat_gpio_isr,
	387	IRQF_TRIGGER_RISING \| IRQF_TRIGGER_FALLING,
	388	"jacket detect", &tosa_bat_jacket);
	389	if (!ret) {
	390	schedule_work(&bat_work);
	391	return 0;
	392	}
	393
	394	free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket);
	395	err_req_jacket:
	396	free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);
	397	err_req_main:
	398	power_supply_unregister(&tosa_bat_bu.psy);
	399	err_psy_reg_bu:
	400	power_supply_unregister(&tosa_bat_jacket.psy);
	401	err_psy_reg_jacket:
	402	power_supply_unregister(&tosa_bat_main.psy);
	403	err_psy_reg_main:
	404
	405	/* see comment in tosa_bat_remove */
bc51e7ff	406	cancel_work_sync(&bat_work);
fece4184	407
019370d3	408	gpio_free_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
fece4184 DES	409	return ret;
	410	}
	411
415ec69f	412	static int tosa_bat_remove(struct platform_device *dev)
fece4184	413	{
fece4184 DES	414	free_irq(gpio_to_irq(TOSA_GPIO_JACKET_DETECT), &tosa_bat_jacket);
	415	free_irq(gpio_to_irq(TOSA_GPIO_BAT1_CRG), &tosa_bat_jacket);
	416	free_irq(gpio_to_irq(TOSA_GPIO_BAT0_CRG), &tosa_bat_main);
	417
	418	power_supply_unregister(&tosa_bat_bu.psy);
	419	power_supply_unregister(&tosa_bat_jacket.psy);
	420	power_supply_unregister(&tosa_bat_main.psy);
	421
	422	/*
bc51e7ff TH	423	* Now cancel the bat_work. We won't get any more schedules,
	424	* since all sources (isr and external_power_changed) are
	425	* unregistered now.
fece4184	426	*/
bc51e7ff	427	cancel_work_sync(&bat_work);
019370d3	428	gpio_free_array(tosa_bat_gpios, ARRAY_SIZE(tosa_bat_gpios));
fece4184 DES	429	return 0;
	430	}
	431
	432	static struct platform_driver tosa_bat_driver = {
	433	.driver.name = "wm97xx-battery",
	434	.driver.owner = THIS_MODULE,
	435	.probe = tosa_bat_probe,
28ea73f4	436	.remove = tosa_bat_remove,
fece4184 DES	437	.suspend = tosa_bat_suspend,
	438	.resume = tosa_bat_resume,
	439	};
	440
300bac7f	441	module_platform_driver(tosa_bat_driver);
fece4184 DES	442
	443	MODULE_LICENSE("GPL");
	444	MODULE_AUTHOR("Dmitry Baryshkov");
	445	MODULE_DESCRIPTION("Tosa battery driver");
	446	MODULE_ALIAS("platform:wm97xx-battery");