[deliverable/linux.git] / drivers / staging / nvec / nvec_power.c

/*
 * nvec_power: power supply driver for a NVIDIA compliant embedded controller
 *
 * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.launchpad.net>
 *
 * Authors:  Ilya Petrov <ilya.muromec@gmail.com>
 *           Marc Dietrich <marvin24@gmx.de>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/power_supply.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/delay.h>

#include "nvec.h"

struct nvec_power {
	struct notifier_block notifier;
	struct delayed_work poller;
	struct nvec_chip *nvec;
	int on;
	int bat_present;
	int bat_status;
	int bat_voltage_now;
	int bat_current_now;
	int bat_current_avg;
	int time_remain;
	int charge_full_design;
	int charge_last_full;
	int critical_capacity;
	int capacity_remain;
	int bat_temperature;
	int bat_cap;
	int bat_type_enum;
	char bat_manu[30];
	char bat_model[30];
	char bat_type[30];
};

enum {
	SLOT_STATUS,
	VOLTAGE,
	TIME_REMAINING,
	CURRENT,
	AVERAGE_CURRENT,
	AVERAGING_TIME_INTERVAL,
	CAPACITY_REMAINING,
	LAST_FULL_CHARGE_CAPACITY,
	DESIGN_CAPACITY,
	CRITICAL_CAPACITY,
	TEMPERATURE,
	MANUFACTURER,
	MODEL,
	TYPE,
};

enum {
	AC,
	BAT,
};

struct bat_response {
	u8 event_type;
	u8 length;
	u8 sub_type;
	u8 status;
	/* payload */
	union {
		char plc[30];
		u16 plu;
		s16 pls;
	};
};

static struct power_supply nvec_bat_psy;
static struct power_supply nvec_psy;

static int nvec_power_notifier(struct notifier_block *nb,
			       unsigned long event_type, void *data)
{
	struct nvec_power *power =
	    container_of(nb, struct nvec_power, notifier);
	struct bat_response *res = (struct bat_response *)data;

	if (event_type != NVEC_SYS)
		return NOTIFY_DONE;

	if (res->sub_type == 0) {
		if (power->on != res->plu) {
			power->on = res->plu;
			power_supply_changed(&nvec_psy);
		}
		return NOTIFY_STOP;
	}
	return NOTIFY_OK;
}

static const int bat_init[] = {
	LAST_FULL_CHARGE_CAPACITY, DESIGN_CAPACITY, CRITICAL_CAPACITY,
	MANUFACTURER, MODEL, TYPE,
};

static void get_bat_mfg_data(struct nvec_power *power)
{
	int i;
	char buf[] = { '\x02', '\x00' };

	for (i = 0; i < ARRAY_SIZE(bat_init); i++) {
		buf[1] = bat_init[i];
		nvec_write_async(power->nvec, buf, 2);
	}
}

static int nvec_power_bat_notifier(struct notifier_block *nb,
				   unsigned long event_type, void *data)
{
	struct nvec_power *power =
	    container_of(nb, struct nvec_power, notifier);
	struct bat_response *res = (struct bat_response *)data;
	int status_changed = 0;

	if (event_type != NVEC_BAT)
		return NOTIFY_DONE;

	switch (res->sub_type) {
	case SLOT_STATUS:
		if (res->plc[0] & 1) {
			if (power->bat_present == 0) {
				status_changed = 1;
				get_bat_mfg_data(power);
			}

			power->bat_present = 1;

			switch ((res->plc[0] >> 1) & 3) {
			case 0:
				power->bat_status =
				    POWER_SUPPLY_STATUS_NOT_CHARGING;
				break;
			case 1:
				power->bat_status =
				    POWER_SUPPLY_STATUS_CHARGING;
				break;
			case 2:
				power->bat_status =
				    POWER_SUPPLY_STATUS_DISCHARGING;
				break;
			default:
				power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
			}
		} else {
			if (power->bat_present == 1)
				status_changed = 1;

			power->bat_present = 0;
			power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
		}
		power->bat_cap = res->plc[1];
		if (status_changed)
			power_supply_changed(&nvec_bat_psy);
		break;
	case VOLTAGE:
		power->bat_voltage_now = res->plu * 1000;
		break;
	case TIME_REMAINING:
		power->time_remain = res->plu * 3600;
		break;
	case CURRENT:
		power->bat_current_now = res->pls * 1000;
		break;
	case AVERAGE_CURRENT:
		power->bat_current_avg = res->pls * 1000;
		break;
	case CAPACITY_REMAINING:
		power->capacity_remain = res->plu * 1000;
		break;
	case LAST_FULL_CHARGE_CAPACITY:
		power->charge_last_full = res->plu * 1000;
		break;
	case DESIGN_CAPACITY:
		power->charge_full_design = res->plu * 1000;
		break;
	case CRITICAL_CAPACITY:
		power->critical_capacity = res->plu * 1000;
		break;
	case TEMPERATURE:
		power->bat_temperature = res->plu - 2732;
		break;
	case MANUFACTURER:
		memcpy(power->bat_manu, &res->plc, res->length - 2);
		power->bat_model[res->length - 2] = '\0';
		break;
	case MODEL:
		memcpy(power->bat_model, &res->plc, res->length - 2);
		power->bat_model[res->length - 2] = '\0';
		break;
	case TYPE:
		memcpy(power->bat_type, &res->plc, res->length - 2);
		power->bat_type[res->length - 2] = '\0';
		/* this differs a little from the spec
		   fill in more if you find some */
		if (!strncmp(power->bat_type, "Li", 30))
			power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_LION;
		else
			power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
		break;
	default:
		return NOTIFY_STOP;
	}

	return NOTIFY_STOP;
}

static int nvec_power_get_property(struct power_supply *psy,
				   enum power_supply_property psp,
				   union power_supply_propval *val)
{
	struct nvec_power *power = dev_get_drvdata(psy->dev->parent);
	switch (psp) {
	case POWER_SUPPLY_PROP_ONLINE:
		val->intval = power->on;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int nvec_battery_get_property(struct power_supply *psy,
				     enum power_supply_property psp,
				     union power_supply_propval *val)
{
	struct nvec_power *power = dev_get_drvdata(psy->dev->parent);

	switch (psp) {
	case POWER_SUPPLY_PROP_STATUS:
		val->intval = power->bat_status;
		break;
	case POWER_SUPPLY_PROP_CAPACITY:
		val->intval = power->bat_cap;
		break;
	case POWER_SUPPLY_PROP_PRESENT:
		val->intval = power->bat_present;
		break;
	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
		val->intval = power->bat_voltage_now;
		break;
	case POWER_SUPPLY_PROP_CURRENT_NOW:
		val->intval = power->bat_current_now;
		break;
	case POWER_SUPPLY_PROP_CURRENT_AVG:
		val->intval = power->bat_current_avg;
		break;
	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
		val->intval = power->time_remain;
		break;
	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
		val->intval = power->charge_full_design;
		break;
	case POWER_SUPPLY_PROP_CHARGE_FULL:
		val->intval = power->charge_last_full;
		break;
	case POWER_SUPPLY_PROP_CHARGE_EMPTY:
		val->intval = power->critical_capacity;
		break;
	case POWER_SUPPLY_PROP_CHARGE_NOW:
		val->intval = power->capacity_remain;
		break;
	case POWER_SUPPLY_PROP_TEMP:
		val->intval = power->bat_temperature;
		break;
	case POWER_SUPPLY_PROP_MANUFACTURER:
		val->strval = power->bat_manu;
		break;
	case POWER_SUPPLY_PROP_MODEL_NAME:
		val->strval = power->bat_model;
		break;
	case POWER_SUPPLY_PROP_TECHNOLOGY:
		val->intval = power->bat_type_enum;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

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

static enum power_supply_property nvec_battery_props[] = {
	POWER_SUPPLY_PROP_STATUS,
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_CAPACITY,
	POWER_SUPPLY_PROP_VOLTAGE_NOW,
	POWER_SUPPLY_PROP_CURRENT_NOW,
#ifdef EC_FULL_DIAG
	POWER_SUPPLY_PROP_CURRENT_AVG,
	POWER_SUPPLY_PROP_TEMP,
	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
#endif
	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
	POWER_SUPPLY_PROP_CHARGE_FULL,
	POWER_SUPPLY_PROP_CHARGE_EMPTY,
	POWER_SUPPLY_PROP_CHARGE_NOW,
	POWER_SUPPLY_PROP_MANUFACTURER,
	POWER_SUPPLY_PROP_MODEL_NAME,
	POWER_SUPPLY_PROP_TECHNOLOGY,
};

static char *nvec_power_supplied_to[] = {
	"battery",
};

static struct power_supply nvec_bat_psy = {
	.name = "battery",
	.type = POWER_SUPPLY_TYPE_BATTERY,
	.properties = nvec_battery_props,
	.num_properties = ARRAY_SIZE(nvec_battery_props),
	.get_property = nvec_battery_get_property,
};

static struct power_supply nvec_psy = {
	.name = "ac",
	.type = POWER_SUPPLY_TYPE_MAINS,
	.supplied_to = nvec_power_supplied_to,
	.num_supplicants = ARRAY_SIZE(nvec_power_supplied_to),
	.properties = nvec_power_props,
	.num_properties = ARRAY_SIZE(nvec_power_props),
	.get_property = nvec_power_get_property,
};

static int counter;
static int const bat_iter[] = {
	SLOT_STATUS, VOLTAGE, CURRENT, CAPACITY_REMAINING,
#ifdef EC_FULL_DIAG
	AVERAGE_CURRENT, TEMPERATURE, TIME_REMAINING,
#endif
};

static void nvec_power_poll(struct work_struct *work)
{
	char buf[] = { '\x01', '\x00' };
	struct nvec_power *power = container_of(work, struct nvec_power,
						poller.work);

	if (counter >= ARRAY_SIZE(bat_iter))
		counter = 0;

/* AC status via sys req */
	nvec_write_async(power->nvec, buf, 2);
	msleep(100);

/* select a battery request function via round robin
   doing it all at once seems to overload the power supply */
	buf[0] = '\x02';	/* battery */
	buf[1] = bat_iter[counter++];
	nvec_write_async(power->nvec, buf, 2);

	schedule_delayed_work(to_delayed_work(work), msecs_to_jiffies(5000));
};

static int nvec_power_probe(struct platform_device *pdev)
{
	struct power_supply *psy;
	struct nvec_power *power;
	struct nvec_chip *nvec = dev_get_drvdata(pdev->dev.parent);

	power = devm_kzalloc(&pdev->dev, sizeof(struct nvec_power), GFP_NOWAIT);
	if (power == NULL)
		return -ENOMEM;

	dev_set_drvdata(&pdev->dev, power);
	power->nvec = nvec;

	switch (pdev->id) {
	case AC:
		psy = &nvec_psy;

		power->notifier.notifier_call = nvec_power_notifier;

		INIT_DELAYED_WORK(&power->poller, nvec_power_poll);
		schedule_delayed_work(&power->poller, msecs_to_jiffies(5000));
		break;
	case BAT:
		psy = &nvec_bat_psy;

		power->notifier.notifier_call = nvec_power_bat_notifier;
		break;
	default:
		return -ENODEV;
	}

	nvec_register_notifier(nvec, &power->notifier, NVEC_SYS);

	if (pdev->id == BAT)
		get_bat_mfg_data(power);

	return power_supply_register(&pdev->dev, psy);
}

static int __devexit nvec_power_remove(struct platform_device *pdev)
{
	struct nvec_power *power = platform_get_drvdata(pdev);

	cancel_delayed_work_sync(&power->poller);
	switch (pdev->id) {
	case AC:
		power_supply_unregister(&nvec_psy);
		break;
	case BAT:
		power_supply_unregister(&nvec_bat_psy);
	}

	return 0;
}

static struct platform_driver nvec_power_driver = {
	.probe = nvec_power_probe,
	.remove = nvec_power_remove,
	.driver = {
		   .name = "nvec-power",
		   .owner = THIS_MODULE,
		   }
};

module_platform_driver(nvec_power_driver);

MODULE_AUTHOR("Ilya Petrov <ilya.muromec@gmail.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("NVEC battery and AC driver");
MODULE_ALIAS("platform:nvec-power");
Commit	Line	Data
162c7d8c MD	1	/*
	2	* nvec_power: power supply driver for a NVIDIA compliant embedded controller
	3	*
	4	* Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.launchpad.net>
	5	*
	6	* Authors: Ilya Petrov <ilya.muromec@gmail.com>
	7	* Marc Dietrich <marvin24@gmx.de>
	8	*
	9	* This file is subject to the terms and conditions of the GNU General Public
	10	* License. See the file "COPYING" in the main directory of this archive
	11	* for more details.
	12	*
	13	*/
	14
32890b98 MD	15	#include <linux/module.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/err.h>
	18	#include <linux/power_supply.h>
	19	#include <linux/slab.h>
	20	#include <linux/workqueue.h>
	21	#include <linux/delay.h>
162c7d8c	22
32890b98 MD	23	#include "nvec.h"
32890b98 MD	24
162c7d8c	25	struct nvec_power {
32890b98 MD	26	struct notifier_block notifier;
	27	struct delayed_work poller;
	28	struct nvec_chip *nvec;
	29	int on;
	30	int bat_present;
	31	int bat_status;
	32	int bat_voltage_now;
	33	int bat_current_now;
	34	int bat_current_avg;
	35	int time_remain;
	36	int charge_full_design;
	37	int charge_last_full;
	38	int critical_capacity;
	39	int capacity_remain;
	40	int bat_temperature;
	41	int bat_cap;
	42	int bat_type_enum;
	43	char bat_manu[30];
	44	char bat_model[30];
	45	char bat_type[30];
	46	};
	47
	48	enum {
	49	SLOT_STATUS,
	50	VOLTAGE,
	51	TIME_REMAINING,
	52	CURRENT,
	53	AVERAGE_CURRENT,
	54	AVERAGING_TIME_INTERVAL,
	55	CAPACITY_REMAINING,
	56	LAST_FULL_CHARGE_CAPACITY,
	57	DESIGN_CAPACITY,
	58	CRITICAL_CAPACITY,
	59	TEMPERATURE,
	60	MANUFACTURER,
	61	MODEL,
	62	TYPE,
	63	};
	64
	65	enum {
	66	AC,
	67	BAT,
	68	};
	69
	70	struct bat_response {
	71	u8 event_type;
	72	u8 length;
	73	u8 sub_type;
	74	u8 status;
162c7d8c MD	75	/* payload */
162c7d8c MD	76	union {
32890b98 MD	77	char plc[30];
	78	u16 plu;
	79	s16 pls;
	80	};
	81	};
	82
	83	static struct power_supply nvec_bat_psy;
	84	static struct power_supply nvec_psy;
	85
	86	static int nvec_power_notifier(struct notifier_block *nb,
162c7d8c	87	unsigned long event_type, void *data)
32890b98	88	{
162c7d8c MD	89	struct nvec_power *power =
162c7d8c MD	90	container_of(nb, struct nvec_power, notifier);
32890b98 MD	91	struct bat_response res = (struct bat_response )data;
	92
	93	if (event_type != NVEC_SYS)
	94	return NOTIFY_DONE;
	95
162c7d8c MD	96	if (res->sub_type == 0) {
162c7d8c MD	97	if (power->on != res->plu) {
32890b98 MD	98	power->on = res->plu;
	99	power_supply_changed(&nvec_psy);
	100	}
	101	return NOTIFY_STOP;
	102	}
	103	return NOTIFY_OK;
	104	}
	105
162c7d8c	106	static const int bat_init[] = {
32890b98 MD	107	LAST_FULL_CHARGE_CAPACITY, DESIGN_CAPACITY, CRITICAL_CAPACITY,
	108	MANUFACTURER, MODEL, TYPE,
	109	};
	110
	111	static void get_bat_mfg_data(struct nvec_power *power)
	112	{
	113	int i;
	114	char buf[] = { '\x02', '\x00' };
	115
162c7d8c	116	for (i = 0; i < ARRAY_SIZE(bat_init); i++) {
32890b98 MD	117	buf[1] = bat_init[i];
	118	nvec_write_async(power->nvec, buf, 2);
	119	}
	120	}
	121
	122	static int nvec_power_bat_notifier(struct notifier_block *nb,
162c7d8c	123	unsigned long event_type, void *data)
32890b98	124	{
162c7d8c MD	125	struct nvec_power *power =
162c7d8c MD	126	container_of(nb, struct nvec_power, notifier);
32890b98 MD	127	struct bat_response res = (struct bat_response )data;
	128	int status_changed = 0;
	129
	130	if (event_type != NVEC_BAT)
	131	return NOTIFY_DONE;
	132
162c7d8c MD	133	switch (res->sub_type) {
	134	case SLOT_STATUS:
	135	if (res->plc[0] & 1) {
	136	if (power->bat_present == 0) {
	137	status_changed = 1;
	138	get_bat_mfg_data(power);
	139	}
	140
	141	power->bat_present = 1;
	142
	143	switch ((res->plc[0] >> 1) & 3) {
	144	case 0:
	145	power->bat_status =
	146	POWER_SUPPLY_STATUS_NOT_CHARGING;
	147	break;
	148	case 1:
	149	power->bat_status =
	150	POWER_SUPPLY_STATUS_CHARGING;
	151	break;
	152	case 2:
	153	power->bat_status =
	154	POWER_SUPPLY_STATUS_DISCHARGING;
	155	break;
	156	default:
32890b98 MD	157	power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
32890b98 MD	158	}
162c7d8c MD	159	} else {
	160	if (power->bat_present == 1)
	161	status_changed = 1;
	162
	163	power->bat_present = 0;
	164	power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
	165	}
	166	power->bat_cap = res->plc[1];
	167	if (status_changed)
	168	power_supply_changed(&nvec_bat_psy);
	169	break;
	170	case VOLTAGE:
	171	power->bat_voltage_now = res->plu * 1000;
	172	break;
	173	case TIME_REMAINING:
	174	power->time_remain = res->plu * 3600;
	175	break;
	176	case CURRENT:
	177	power->bat_current_now = res->pls * 1000;
	178	break;
	179	case AVERAGE_CURRENT:
	180	power->bat_current_avg = res->pls * 1000;
	181	break;
	182	case CAPACITY_REMAINING:
	183	power->capacity_remain = res->plu * 1000;
	184	break;
	185	case LAST_FULL_CHARGE_CAPACITY:
	186	power->charge_last_full = res->plu * 1000;
	187	break;
	188	case DESIGN_CAPACITY:
	189	power->charge_full_design = res->plu * 1000;
	190	break;
	191	case CRITICAL_CAPACITY:
	192	power->critical_capacity = res->plu * 1000;
	193	break;
	194	case TEMPERATURE:
	195	power->bat_temperature = res->plu - 2732;
	196	break;
	197	case MANUFACTURER:
	198	memcpy(power->bat_manu, &res->plc, res->length - 2);
	199	power->bat_model[res->length - 2] = '\0';
	200	break;
	201	case MODEL:
	202	memcpy(power->bat_model, &res->plc, res->length - 2);
	203	power->bat_model[res->length - 2] = '\0';
	204	break;
	205	case TYPE:
	206	memcpy(power->bat_type, &res->plc, res->length - 2);
	207	power->bat_type[res->length - 2] = '\0';
	208	/* this differs a little from the spec
	209	fill in more if you find some */
	210	if (!strncmp(power->bat_type, "Li", 30))
	211	power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_LION;
	212	else
	213	power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
	214	break;
	215	default:
	216	return NOTIFY_STOP;
32890b98 MD	217	}
	218
	219	return NOTIFY_STOP;
	220	}
	221
	222	static int nvec_power_get_property(struct power_supply *psy,
162c7d8c MD	223	enum power_supply_property psp,
162c7d8c MD	224	union power_supply_propval *val)
32890b98 MD	225	{
	226	struct nvec_power *power = dev_get_drvdata(psy->dev->parent);
	227	switch (psp) {
	228	case POWER_SUPPLY_PROP_ONLINE:
	229	val->intval = power->on;
	230	break;
	231	default:
	232	return -EINVAL;
	233	}
	234	return 0;
	235	}
	236
	237	static int nvec_battery_get_property(struct power_supply *psy,
162c7d8c MD	238	enum power_supply_property psp,
162c7d8c MD	239	union power_supply_propval *val)
32890b98 MD	240	{
	241	struct nvec_power *power = dev_get_drvdata(psy->dev->parent);
	242
162c7d8c MD	243	switch (psp) {
	244	case POWER_SUPPLY_PROP_STATUS:
	245	val->intval = power->bat_status;
	246	break;
	247	case POWER_SUPPLY_PROP_CAPACITY:
	248	val->intval = power->bat_cap;
	249	break;
	250	case POWER_SUPPLY_PROP_PRESENT:
	251	val->intval = power->bat_present;
	252	break;
	253	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
	254	val->intval = power->bat_voltage_now;
	255	break;
	256	case POWER_SUPPLY_PROP_CURRENT_NOW:
	257	val->intval = power->bat_current_now;
	258	break;
	259	case POWER_SUPPLY_PROP_CURRENT_AVG:
	260	val->intval = power->bat_current_avg;
	261	break;
	262	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
	263	val->intval = power->time_remain;
	264	break;
	265	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
	266	val->intval = power->charge_full_design;
	267	break;
	268	case POWER_SUPPLY_PROP_CHARGE_FULL:
	269	val->intval = power->charge_last_full;
	270	break;
	271	case POWER_SUPPLY_PROP_CHARGE_EMPTY:
	272	val->intval = power->critical_capacity;
	273	break;
	274	case POWER_SUPPLY_PROP_CHARGE_NOW:
	275	val->intval = power->capacity_remain;
	276	break;
	277	case POWER_SUPPLY_PROP_TEMP:
	278	val->intval = power->bat_temperature;
	279	break;
	280	case POWER_SUPPLY_PROP_MANUFACTURER:
	281	val->strval = power->bat_manu;
	282	break;
	283	case POWER_SUPPLY_PROP_MODEL_NAME:
	284	val->strval = power->bat_model;
	285	break;
	286	case POWER_SUPPLY_PROP_TECHNOLOGY:
	287	val->intval = power->bat_type_enum;
	288	break;
	289	default:
	290	return -EINVAL;
	291	}
32890b98 MD	292	return 0;
	293	}
	294
	295	static enum power_supply_property nvec_power_props[] = {
	296	POWER_SUPPLY_PROP_ONLINE,
	297	};
	298
	299	static enum power_supply_property nvec_battery_props[] = {
	300	POWER_SUPPLY_PROP_STATUS,
	301	POWER_SUPPLY_PROP_PRESENT,
	302	POWER_SUPPLY_PROP_CAPACITY,
	303	POWER_SUPPLY_PROP_VOLTAGE_NOW,
	304	POWER_SUPPLY_PROP_CURRENT_NOW,
	305	#ifdef EC_FULL_DIAG
	306	POWER_SUPPLY_PROP_CURRENT_AVG,
	307	POWER_SUPPLY_PROP_TEMP,
	308	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
	309	#endif
	310	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
	311	POWER_SUPPLY_PROP_CHARGE_FULL,
	312	POWER_SUPPLY_PROP_CHARGE_EMPTY,
	313	POWER_SUPPLY_PROP_CHARGE_NOW,
	314	POWER_SUPPLY_PROP_MANUFACTURER,
	315	POWER_SUPPLY_PROP_MODEL_NAME,
	316	POWER_SUPPLY_PROP_TECHNOLOGY,
	317	};
	318
	319	static char *nvec_power_supplied_to[] = {
	320	"battery",
	321	};
	322
	323	static struct power_supply nvec_bat_psy = {
162c7d8c MD	324	.name = "battery",
	325	.type = POWER_SUPPLY_TYPE_BATTERY,
	326	.properties = nvec_battery_props,
	327	.num_properties = ARRAY_SIZE(nvec_battery_props),
	328	.get_property = nvec_battery_get_property,
32890b98 MD	329	};
	330
	331	static struct power_supply nvec_psy = {
	332	.name = "ac",
	333	.type = POWER_SUPPLY_TYPE_MAINS,
	334	.supplied_to = nvec_power_supplied_to,
	335	.num_supplicants = ARRAY_SIZE(nvec_power_supplied_to),
	336	.properties = nvec_power_props,
	337	.num_properties = ARRAY_SIZE(nvec_power_props),
	338	.get_property = nvec_power_get_property,
	339	};
	340
162c7d8c MD	341	static int counter;
162c7d8c MD	342	static int const bat_iter[] = {
32890b98 MD	343	SLOT_STATUS, VOLTAGE, CURRENT, CAPACITY_REMAINING,
	344	#ifdef EC_FULL_DIAG
	345	AVERAGE_CURRENT, TEMPERATURE, TIME_REMAINING,
	346	#endif
	347	};
	348
	349	static void nvec_power_poll(struct work_struct *work)
	350	{
	351	char buf[] = { '\x01', '\x00' };
	352	struct nvec_power *power = container_of(work, struct nvec_power,
162c7d8c	353	poller.work);
32890b98 MD	354
	355	if (counter >= ARRAY_SIZE(bat_iter))
	356	counter = 0;
	357
	358	/* AC status via sys req */
	359	nvec_write_async(power->nvec, buf, 2);
	360	msleep(100);
	361
	362	/* select a battery request function via round robin
	363	doing it all at once seems to overload the power supply */
162c7d8c MD	364	buf[0] = '\x02'; /* battery */
162c7d8c MD	365	buf[1] = bat_iter[counter++];
32890b98 MD	366	nvec_write_async(power->nvec, buf, 2);
32890b98 MD	367
32890b98 MD	368	schedule_delayed_work(to_delayed_work(work), msecs_to_jiffies(5000));
	369	};
	370
46620803	371	static int nvec_power_probe(struct platform_device *pdev)
32890b98 MD	372	{
32890b98 MD	373	struct power_supply *psy;
f5e3352e	374	struct nvec_power *power;
32890b98 MD	375	struct nvec_chip *nvec = dev_get_drvdata(pdev->dev.parent);
32890b98 MD	376
f5e3352e MD	377	power = devm_kzalloc(&pdev->dev, sizeof(struct nvec_power), GFP_NOWAIT);
	378	if (power == NULL)
	379	return -ENOMEM;
	380
32890b98 MD	381	dev_set_drvdata(&pdev->dev, power);
	382	power->nvec = nvec;
	383
	384	switch (pdev->id) {
	385	case AC:
	386	psy = &nvec_psy;
	387
	388	power->notifier.notifier_call = nvec_power_notifier;
	389
	390	INIT_DELAYED_WORK(&power->poller, nvec_power_poll);
	391	schedule_delayed_work(&power->poller, msecs_to_jiffies(5000));
	392	break;
	393	case BAT:
	394	psy = &nvec_bat_psy;
	395
162c7d8c	396	power->notifier.notifier_call = nvec_power_bat_notifier;
32890b98 MD	397	break;
32890b98 MD	398	default:
32890b98 MD	399	return -ENODEV;
	400	}
	401
	402	nvec_register_notifier(nvec, &power->notifier, NVEC_SYS);
	403
	404	if (pdev->id == BAT)
	405	get_bat_mfg_data(power);
	406
	407	return power_supply_register(&pdev->dev, psy);
	408	}
	409
3cdde3a3 MD	410	static int __devexit nvec_power_remove(struct platform_device *pdev)
	411	{
	412	struct nvec_power *power = platform_get_drvdata(pdev);
	413
	414	cancel_delayed_work_sync(&power->poller);
	415	switch (pdev->id) {
	416	case AC:
	417	power_supply_unregister(&nvec_psy);
	418	break;
	419	case BAT:
	420	power_supply_unregister(&nvec_bat_psy);
	421	}
	422
	423	return 0;
	424	}
	425
32890b98 MD	426	static struct platform_driver nvec_power_driver = {
32890b98 MD	427	.probe = nvec_power_probe,
44b90a3f	428	.remove = nvec_power_remove,
32890b98	429	.driver = {
162c7d8c MD	430	.name = "nvec-power",
	431	.owner = THIS_MODULE,
	432	}
32890b98 MD	433	};
32890b98 MD	434
9891b1ce	435	module_platform_driver(nvec_power_driver);
32890b98 MD	436
	437	MODULE_AUTHOR("Ilya Petrov <ilya.muromec@gmail.com>");
	438	MODULE_LICENSE("GPL");
	439	MODULE_DESCRIPTION("NVEC battery and AC driver");
	440	MODULE_ALIAS("platform:nvec-power");