[mirror_ubuntu-bionic-kernel.git] / drivers / power / test_power.c

/*
 * Power supply driver for testing.
 *
 * Copyright 2010  Anton Vorontsov <cbouatmailru@gmail.com>
 *
 * Dynamic module parameter code from the Virtual Battery Driver
 * Copyright (C) 2008 Pylone, Inc.
 * By: Masashi YOKOTA <yokota@pylone.jp>
 * Originally found here:
 * http://downloads.pylone.jp/src/virtual_battery/virtual_battery-0.0.1.tar.bz2
 *
 * 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/errno.h>
#include <linux/delay.h>
#include <linux/vermagic.h>

static int ac_online			= 1;
static int usb_online			= 1;
static int battery_status		= POWER_SUPPLY_STATUS_DISCHARGING;
static int battery_health		= POWER_SUPPLY_HEALTH_GOOD;
static int battery_present		= 1; /* true */
static int battery_technology		= POWER_SUPPLY_TECHNOLOGY_LION;
static int battery_capacity		= 50;
static int battery_voltage		= 3300;

static int test_power_get_ac_property(struct power_supply *psy,
				      enum power_supply_property psp,
				      union power_supply_propval *val)
{
	switch (psp) {
	case POWER_SUPPLY_PROP_ONLINE:
		val->intval = ac_online;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int test_power_get_usb_property(struct power_supply *psy,
				      enum power_supply_property psp,
				      union power_supply_propval *val)
{
	switch (psp) {
	case POWER_SUPPLY_PROP_ONLINE:
		val->intval = usb_online;
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int test_power_get_battery_property(struct power_supply *psy,
					   enum power_supply_property psp,
					   union power_supply_propval *val)
{
	switch (psp) {
	case POWER_SUPPLY_PROP_MODEL_NAME:
		val->strval = "Test battery";
		break;
	case POWER_SUPPLY_PROP_MANUFACTURER:
		val->strval = "Linux";
		break;
	case POWER_SUPPLY_PROP_SERIAL_NUMBER:
		val->strval = UTS_RELEASE;
		break;
	case POWER_SUPPLY_PROP_STATUS:
		val->intval = battery_status;
		break;
	case POWER_SUPPLY_PROP_CHARGE_TYPE:
		val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
		break;
	case POWER_SUPPLY_PROP_HEALTH:
		val->intval = battery_health;
		break;
	case POWER_SUPPLY_PROP_PRESENT:
		val->intval = battery_present;
		break;
	case POWER_SUPPLY_PROP_TECHNOLOGY:
		val->intval = battery_technology;
		break;
	case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
		val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
		break;
	case POWER_SUPPLY_PROP_CAPACITY:
	case POWER_SUPPLY_PROP_CHARGE_NOW:
		val->intval = battery_capacity;
		break;
	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
	case POWER_SUPPLY_PROP_CHARGE_FULL:
		val->intval = 100;
		break;
	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
	case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
		val->intval = 3600;
		break;
	case POWER_SUPPLY_PROP_TEMP:
		val->intval = 26;
		break;
	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
		val->intval = battery_voltage;
		break;
	default:
		pr_info("%s: some properties deliberately report errors.\n",
			__func__);
		return -EINVAL;
	}
	return 0;
}

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

static enum power_supply_property test_power_battery_props[] = {
	POWER_SUPPLY_PROP_STATUS,
	POWER_SUPPLY_PROP_CHARGE_TYPE,
	POWER_SUPPLY_PROP_HEALTH,
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_TECHNOLOGY,
	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
	POWER_SUPPLY_PROP_CHARGE_FULL,
	POWER_SUPPLY_PROP_CHARGE_NOW,
	POWER_SUPPLY_PROP_CAPACITY,
	POWER_SUPPLY_PROP_CAPACITY_LEVEL,
	POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
	POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
	POWER_SUPPLY_PROP_MODEL_NAME,
	POWER_SUPPLY_PROP_MANUFACTURER,
	POWER_SUPPLY_PROP_SERIAL_NUMBER,
	POWER_SUPPLY_PROP_TEMP,
	POWER_SUPPLY_PROP_VOLTAGE_NOW,
};

static char *test_power_ac_supplied_to[] = {
	"test_battery",
};

static struct power_supply test_power_supplies[] = {
	{
		.name = "test_ac",
		.type = POWER_SUPPLY_TYPE_MAINS,
		.supplied_to = test_power_ac_supplied_to,
		.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
		.properties = test_power_ac_props,
		.num_properties = ARRAY_SIZE(test_power_ac_props),
		.get_property = test_power_get_ac_property,
	}, {
		.name = "test_battery",
		.type = POWER_SUPPLY_TYPE_BATTERY,
		.properties = test_power_battery_props,
		.num_properties = ARRAY_SIZE(test_power_battery_props),
		.get_property = test_power_get_battery_property,
	}, {
		.name = "test_usb",
		.type = POWER_SUPPLY_TYPE_USB,
		.supplied_to = test_power_ac_supplied_to,
		.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
		.properties = test_power_ac_props,
		.num_properties = ARRAY_SIZE(test_power_ac_props),
		.get_property = test_power_get_usb_property,
	},
};


static int __init test_power_init(void)
{
	int i;
	int ret;

	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
		ret = power_supply_register(NULL, &test_power_supplies[i]);
		if (ret) {
			pr_err("%s: failed to register %s\n", __func__,
				test_power_supplies[i].name);
			goto failed;
		}
	}

	return 0;
failed:
	while (--i >= 0)
		power_supply_unregister(&test_power_supplies[i]);
	return ret;
}
module_init(test_power_init);

static void __exit test_power_exit(void)
{
	int i;

	/* Let's see how we handle changes... */
	ac_online = 0;
	usb_online = 0;
	battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
		power_supply_changed(&test_power_supplies[i]);
	pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
		__func__);
	ssleep(10);

	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
		power_supply_unregister(&test_power_supplies[i]);
}
module_exit(test_power_exit);


#define MAX_KEYLENGTH 256
struct battery_property_map {
	int value;
	char const *key;
};

static struct battery_property_map map_ac_online[] = {
	{ 0,  "on"  },
	{ 1,  "off" },
	{ -1, NULL  },
};

static struct battery_property_map map_status[] = {
	{ POWER_SUPPLY_STATUS_CHARGING,     "charging"     },
	{ POWER_SUPPLY_STATUS_DISCHARGING,  "discharging"  },
	{ POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" },
	{ POWER_SUPPLY_STATUS_FULL,         "full"         },
	{ -1,                               NULL           },
};

static struct battery_property_map map_health[] = {
	{ POWER_SUPPLY_HEALTH_GOOD,           "good"        },
	{ POWER_SUPPLY_HEALTH_OVERHEAT,       "overheat"    },
	{ POWER_SUPPLY_HEALTH_DEAD,           "dead"        },
	{ POWER_SUPPLY_HEALTH_OVERVOLTAGE,    "overvoltage" },
	{ POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure"     },
	{ -1,                                 NULL          },
};

static struct battery_property_map map_present[] = {
	{ 0,  "false" },
	{ 1,  "true"  },
	{ -1, NULL    },
};

static struct battery_property_map map_technology[] = {
	{ POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" },
	{ POWER_SUPPLY_TECHNOLOGY_LION, "LION" },
	{ POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" },
	{ POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" },
	{ POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" },
	{ POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" },
	{ -1,				NULL   },
};


static int map_get_value(struct battery_property_map *map, const char *key,
				int def_val)
{
	char buf[MAX_KEYLENGTH];
	int cr;

	strncpy(buf, key, MAX_KEYLENGTH);
	buf[MAX_KEYLENGTH-1] = '\0';

	cr = strnlen(buf, MAX_KEYLENGTH) - 1;
	if (buf[cr] == '\n')
		buf[cr] = '\0';

	while (map->key) {
		if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0)
			return map->value;
		map++;
	}

	return def_val;
}


static const char *map_get_key(struct battery_property_map *map, int value,
				const char *def_key)
{
	while (map->key) {
		if (map->value == value)
			return map->key;
		map++;
	}

	return def_key;
}

static int param_set_ac_online(const char *key, const struct kernel_param *kp)
{
	ac_online = map_get_value(map_ac_online, key, ac_online);
	power_supply_changed(&test_power_supplies[0]);
	return 0;
}

static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
{
	strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown"));
	return strlen(buffer);
}

static int param_set_usb_online(const char *key, const struct kernel_param *kp)
{
	usb_online = map_get_value(map_ac_online, key, usb_online);
	power_supply_changed(&test_power_supplies[2]);
	return 0;
}

static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
{
	strcpy(buffer, map_get_key(map_ac_online, usb_online, "unknown"));
	return strlen(buffer);
}

static int param_set_battery_status(const char *key,
					const struct kernel_param *kp)
{
	battery_status = map_get_value(map_status, key, battery_status);
	power_supply_changed(&test_power_supplies[1]);
	return 0;
}

static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
{
	strcpy(buffer, map_get_key(map_status, battery_status, "unknown"));
	return strlen(buffer);
}

static int param_set_battery_health(const char *key,
					const struct kernel_param *kp)
{
	battery_health = map_get_value(map_health, key, battery_health);
	power_supply_changed(&test_power_supplies[1]);
	return 0;
}

static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
{
	strcpy(buffer, map_get_key(map_health, battery_health, "unknown"));
	return strlen(buffer);
}

static int param_set_battery_present(const char *key,
					const struct kernel_param *kp)
{
	battery_present = map_get_value(map_present, key, battery_present);
	power_supply_changed(&test_power_supplies[0]);
	return 0;
}

static int param_get_battery_present(char *buffer,
					const struct kernel_param *kp)
{
	strcpy(buffer, map_get_key(map_present, battery_present, "unknown"));
	return strlen(buffer);
}

static int param_set_battery_technology(const char *key,
					const struct kernel_param *kp)
{
	battery_technology = map_get_value(map_technology, key,
						battery_technology);
	power_supply_changed(&test_power_supplies[1]);
	return 0;
}

static int param_get_battery_technology(char *buffer,
					const struct kernel_param *kp)
{
	strcpy(buffer,
		map_get_key(map_technology, battery_technology, "unknown"));
	return strlen(buffer);
}

static int param_set_battery_capacity(const char *key,
					const struct kernel_param *kp)
{
	int tmp;

	if (1 != sscanf(key, "%d", &tmp))
		return -EINVAL;

	battery_capacity = tmp;
	power_supply_changed(&test_power_supplies[1]);
	return 0;
}

#define param_get_battery_capacity param_get_int

static int param_set_battery_voltage(const char *key,
					const struct kernel_param *kp)
{
	int tmp;

	if (1 != sscanf(key, "%d", &tmp))
		return -EINVAL;

	battery_voltage = tmp;
	power_supply_changed(&test_power_supplies[1]);
	return 0;
}

#define param_get_battery_voltage param_get_int

static struct kernel_param_ops param_ops_ac_online = {
	.set = param_set_ac_online,
	.get = param_get_ac_online,
};

static struct kernel_param_ops param_ops_usb_online = {
	.set = param_set_usb_online,
	.get = param_get_usb_online,
};

static struct kernel_param_ops param_ops_battery_status = {
	.set = param_set_battery_status,
	.get = param_get_battery_status,
};

static struct kernel_param_ops param_ops_battery_present = {
	.set = param_set_battery_present,
	.get = param_get_battery_present,
};

static struct kernel_param_ops param_ops_battery_technology = {
	.set = param_set_battery_technology,
	.get = param_get_battery_technology,
};

static struct kernel_param_ops param_ops_battery_health = {
	.set = param_set_battery_health,
	.get = param_get_battery_health,
};

static struct kernel_param_ops param_ops_battery_capacity = {
	.set = param_set_battery_capacity,
	.get = param_get_battery_capacity,
};

static struct kernel_param_ops param_ops_battery_voltage = {
	.set = param_set_battery_voltage,
	.get = param_get_battery_voltage,
};

#define param_check_ac_online(name, p) __param_check(name, p, void);
#define param_check_usb_online(name, p) __param_check(name, p, void);
#define param_check_battery_status(name, p) __param_check(name, p, void);
#define param_check_battery_present(name, p) __param_check(name, p, void);
#define param_check_battery_technology(name, p) __param_check(name, p, void);
#define param_check_battery_health(name, p) __param_check(name, p, void);
#define param_check_battery_capacity(name, p) __param_check(name, p, void);
#define param_check_battery_voltage(name, p) __param_check(name, p, void);


module_param(ac_online, ac_online, 0644);
MODULE_PARM_DESC(ac_online, "AC charging state <on|off>");

module_param(usb_online, usb_online, 0644);
MODULE_PARM_DESC(usb_online, "USB charging state <on|off>");

module_param(battery_status, battery_status, 0644);
MODULE_PARM_DESC(battery_status,
	"battery status <charging|discharging|not-charging|full>");

module_param(battery_present, battery_present, 0644);
MODULE_PARM_DESC(battery_present,
	"battery presence state <good|overheat|dead|overvoltage|failure>");

module_param(battery_technology, battery_technology, 0644);
MODULE_PARM_DESC(battery_technology,
	"battery technology <NiMH|LION|LIPO|LiFe|NiCd|LiMn>");

module_param(battery_health, battery_health, 0644);
MODULE_PARM_DESC(battery_health,
	"battery health state <good|overheat|dead|overvoltage|failure>");

module_param(battery_capacity, battery_capacity, 0644);
MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)");

module_param(battery_voltage, battery_voltage, 0644);
MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)");

MODULE_DESCRIPTION("Power supply driver for testing");
MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
a1e50fd4 AV	1	/*
	2	* Power supply driver for testing.
	3	*
	4	* Copyright 2010 Anton Vorontsov <cbouatmailru@gmail.com>
	5	*
f17ef9b2 JS	6	* Dynamic module parameter code from the Virtual Battery Driver
	7	* Copyright (C) 2008 Pylone, Inc.
	8	* By: Masashi YOKOTA <yokota@pylone.jp>
	9	* Originally found here:
	10	* http://downloads.pylone.jp/src/virtual_battery/virtual_battery-0.0.1.tar.bz2
	11	*
a1e50fd4 AV	12	* This program is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU General Public License version 2 as
	14	* published by the Free Software Foundation.
	15	*/
	16
	17	#include <linux/kernel.h>
	18	#include <linux/module.h>
	19	#include <linux/power_supply.h>
	20	#include <linux/errno.h>
	21	#include <linux/delay.h>
	22	#include <linux/vermagic.h>
	23
f17ef9b2	24	static int ac_online = 1;
73847375	25	static int usb_online = 1;
f17ef9b2 JS	26	static int battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
	27	static int battery_health = POWER_SUPPLY_HEALTH_GOOD;
	28	static int battery_present = 1; /* true */
	29	static int battery_technology = POWER_SUPPLY_TECHNOLOGY_LION;
	30	static int battery_capacity = 50;
85a392d4	31	static int battery_voltage = 3300;
a1e50fd4 AV	32
	33	static int test_power_get_ac_property(struct power_supply *psy,
	34	enum power_supply_property psp,
	35	union power_supply_propval *val)
	36	{
	37	switch (psp) {
	38	case POWER_SUPPLY_PROP_ONLINE:
f17ef9b2	39	val->intval = ac_online;
a1e50fd4 AV	40	break;
	41	default:
	42	return -EINVAL;
	43	}
	44	return 0;
	45	}
	46
73847375 DES	47	static int test_power_get_usb_property(struct power_supply *psy,
	48	enum power_supply_property psp,
	49	union power_supply_propval *val)
	50	{
	51	switch (psp) {
	52	case POWER_SUPPLY_PROP_ONLINE:
	53	val->intval = usb_online;
	54	break;
	55	default:
	56	return -EINVAL;
	57	}
	58	return 0;
	59	}
	60
a1e50fd4 AV	61	static int test_power_get_battery_property(struct power_supply *psy,
	62	enum power_supply_property psp,
	63	union power_supply_propval *val)
	64	{
	65	switch (psp) {
	66	case POWER_SUPPLY_PROP_MODEL_NAME:
	67	val->strval = "Test battery";
	68	break;
	69	case POWER_SUPPLY_PROP_MANUFACTURER:
	70	val->strval = "Linux";
	71	break;
	72	case POWER_SUPPLY_PROP_SERIAL_NUMBER:
	73	val->strval = UTS_RELEASE;
	74	break;
	75	case POWER_SUPPLY_PROP_STATUS:
f17ef9b2	76	val->intval = battery_status;
a1e50fd4 AV	77	break;
	78	case POWER_SUPPLY_PROP_CHARGE_TYPE:
	79	val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
	80	break;
	81	case POWER_SUPPLY_PROP_HEALTH:
f17ef9b2 JS	82	val->intval = battery_health;
	83	break;
	84	case POWER_SUPPLY_PROP_PRESENT:
	85	val->intval = battery_present;
a1e50fd4 AV	86	break;
a1e50fd4 AV	87	case POWER_SUPPLY_PROP_TECHNOLOGY:
f17ef9b2	88	val->intval = battery_technology;
a1e50fd4 AV	89	break;
	90	case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
	91	val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
	92	break;
	93	case POWER_SUPPLY_PROP_CAPACITY:
f17ef9b2 JS	94	case POWER_SUPPLY_PROP_CHARGE_NOW:
	95	val->intval = battery_capacity;
	96	break;
	97	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
	98	case POWER_SUPPLY_PROP_CHARGE_FULL:
	99	val->intval = 100;
a1e50fd4 AV	100	break;
	101	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
	102	case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
	103	val->intval = 3600;
	104	break;
85a392d4 DES	105	case POWER_SUPPLY_PROP_TEMP:
	106	val->intval = 26;
	107	break;
	108	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
	109	val->intval = battery_voltage;
	110	break;
a1e50fd4 AV	111	default:
	112	pr_info("%s: some properties deliberately report errors.\n",
	113	__func__);
	114	return -EINVAL;
	115	}
	116	return 0;
	117	}
	118
	119	static enum power_supply_property test_power_ac_props[] = {
	120	POWER_SUPPLY_PROP_ONLINE,
	121	};
	122
	123	static enum power_supply_property test_power_battery_props[] = {
	124	POWER_SUPPLY_PROP_STATUS,
	125	POWER_SUPPLY_PROP_CHARGE_TYPE,
	126	POWER_SUPPLY_PROP_HEALTH,
f17ef9b2	127	POWER_SUPPLY_PROP_PRESENT,
a1e50fd4	128	POWER_SUPPLY_PROP_TECHNOLOGY,
f17ef9b2	129	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
a1e50fd4	130	POWER_SUPPLY_PROP_CHARGE_FULL,
f17ef9b2	131	POWER_SUPPLY_PROP_CHARGE_NOW,
a1e50fd4 AV	132	POWER_SUPPLY_PROP_CAPACITY,
	133	POWER_SUPPLY_PROP_CAPACITY_LEVEL,
	134	POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
	135	POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
	136	POWER_SUPPLY_PROP_MODEL_NAME,
	137	POWER_SUPPLY_PROP_MANUFACTURER,
	138	POWER_SUPPLY_PROP_SERIAL_NUMBER,
85a392d4 DES	139	POWER_SUPPLY_PROP_TEMP,
85a392d4 DES	140	POWER_SUPPLY_PROP_VOLTAGE_NOW,
a1e50fd4 AV	141	};
	142
	143	static char *test_power_ac_supplied_to[] = {
	144	"test_battery",
	145	};
	146
	147	static struct power_supply test_power_supplies[] = {
	148	{
	149	.name = "test_ac",
	150	.type = POWER_SUPPLY_TYPE_MAINS,
	151	.supplied_to = test_power_ac_supplied_to,
	152	.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
	153	.properties = test_power_ac_props,
	154	.num_properties = ARRAY_SIZE(test_power_ac_props),
	155	.get_property = test_power_get_ac_property,
	156	}, {
	157	.name = "test_battery",
	158	.type = POWER_SUPPLY_TYPE_BATTERY,
	159	.properties = test_power_battery_props,
	160	.num_properties = ARRAY_SIZE(test_power_battery_props),
	161	.get_property = test_power_get_battery_property,
73847375 DES	162	}, {
	163	.name = "test_usb",
	164	.type = POWER_SUPPLY_TYPE_USB,
	165	.supplied_to = test_power_ac_supplied_to,
	166	.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
	167	.properties = test_power_ac_props,
	168	.num_properties = ARRAY_SIZE(test_power_ac_props),
	169	.get_property = test_power_get_usb_property,
a1e50fd4 AV	170	},
	171	};
	172
f17ef9b2	173
a1e50fd4 AV	174	static int __init test_power_init(void)
	175	{
	176	int i;
	177	int ret;
	178
	179	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
	180	ret = power_supply_register(NULL, &test_power_supplies[i]);
	181	if (ret) {
	182	pr_err("%s: failed to register %s\n", __func__,
	183	test_power_supplies[i].name);
	184	goto failed;
	185	}
	186	}
	187
	188	return 0;
	189	failed:
	190	while (--i >= 0)
	191	power_supply_unregister(&test_power_supplies[i]);
	192	return ret;
	193	}
	194	module_init(test_power_init);
	195
	196	static void __exit test_power_exit(void)
	197	{
	198	int i;
	199
	200	/* Let's see how we handle changes... */
f17ef9b2	201	ac_online = 0;
73847375	202	usb_online = 0;
f17ef9b2	203	battery_status = POWER_SUPPLY_STATUS_DISCHARGING;
a1e50fd4 AV	204	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
	205	power_supply_changed(&test_power_supplies[i]);
	206	pr_info("%s: 'changed' event sent, sleeping for 10 seconds...\n",
	207	__func__);
	208	ssleep(10);
	209
	210	for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++)
	211	power_supply_unregister(&test_power_supplies[i]);
	212	}
	213	module_exit(test_power_exit);
	214
f17ef9b2 JS	215
	216
	217	#define MAX_KEYLENGTH 256
	218	struct battery_property_map {
	219	int value;
	220	char const *key;
	221	};
	222
	223	static struct battery_property_map map_ac_online[] = {
	224	{ 0, "on" },
	225	{ 1, "off" },
	226	{ -1, NULL },
	227	};
	228
	229	static struct battery_property_map map_status[] = {
	230	{ POWER_SUPPLY_STATUS_CHARGING, "charging" },
	231	{ POWER_SUPPLY_STATUS_DISCHARGING, "discharging" },
	232	{ POWER_SUPPLY_STATUS_NOT_CHARGING, "not-charging" },
	233	{ POWER_SUPPLY_STATUS_FULL, "full" },
	234	{ -1, NULL },
	235	};
	236
	237	static struct battery_property_map map_health[] = {
	238	{ POWER_SUPPLY_HEALTH_GOOD, "good" },
	239	{ POWER_SUPPLY_HEALTH_OVERHEAT, "overheat" },
	240	{ POWER_SUPPLY_HEALTH_DEAD, "dead" },
	241	{ POWER_SUPPLY_HEALTH_OVERVOLTAGE, "overvoltage" },
	242	{ POWER_SUPPLY_HEALTH_UNSPEC_FAILURE, "failure" },
	243	{ -1, NULL },
	244	};
	245
	246	static struct battery_property_map map_present[] = {
	247	{ 0, "false" },
	248	{ 1, "true" },
	249	{ -1, NULL },
	250	};
	251
	252	static struct battery_property_map map_technology[] = {
	253	{ POWER_SUPPLY_TECHNOLOGY_NiMH, "NiMH" },
	254	{ POWER_SUPPLY_TECHNOLOGY_LION, "LION" },
	255	{ POWER_SUPPLY_TECHNOLOGY_LIPO, "LIPO" },
	256	{ POWER_SUPPLY_TECHNOLOGY_LiFe, "LiFe" },
	257	{ POWER_SUPPLY_TECHNOLOGY_NiCd, "NiCd" },
	258	{ POWER_SUPPLY_TECHNOLOGY_LiMn, "LiMn" },
	259	{ -1, NULL },
	260	};
	261
	262
	263	static int map_get_value(struct battery_property_map map, const char key,
	264	int def_val)
	265	{
	266	char buf[MAX_KEYLENGTH];
	267	int cr;
	268
	269	strncpy(buf, key, MAX_KEYLENGTH);
	270	buf[MAX_KEYLENGTH-1] = '\0';
	271
	272	cr = strnlen(buf, MAX_KEYLENGTH) - 1;
	273	if (buf[cr] == '\n')
	274	buf[cr] = '\0';
	275
	276	while (map->key) {
	277	if (strncasecmp(map->key, buf, MAX_KEYLENGTH) == 0)
	278	return map->value;
279	map++;
280	}
281
282	return def_val;
283	}
284
285
286	static const char map_get_key(struct battery_property_map map, int value,
287	const char *def_key)
288	{
289	while (map->key) {
290	if (map->value == value)
291	return map->key;
292	map++;
293	}
294
295	return def_key;
296	}
297
298	static int param_set_ac_online(const char key, const struct kernel_param kp)
299	{
300	ac_online = map_get_value(map_ac_online, key, ac_online);
301	power_supply_changed(&test_power_supplies[0]);
302	return 0;
303	}
304
305	static int param_get_ac_online(char buffer, const struct kernel_param kp)
306	{
307	strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown"));
308	return strlen(buffer);
309	}
310
73847375 DES	311	static int param_set_usb_online(const char key, const struct kernel_param kp)
	312	{
	313	usb_online = map_get_value(map_ac_online, key, usb_online);
	314	power_supply_changed(&test_power_supplies[2]);
	315	return 0;
	316	}
	317
	318	static int param_get_usb_online(char buffer, const struct kernel_param kp)
	319	{
	320	strcpy(buffer, map_get_key(map_ac_online, usb_online, "unknown"));
	321	return strlen(buffer);
	322	}
	323
f17ef9b2 JS	324	static int param_set_battery_status(const char *key,
	325	const struct kernel_param *kp)
	326	{
	327	battery_status = map_get_value(map_status, key, battery_status);
	328	power_supply_changed(&test_power_supplies[1]);
	329	return 0;
	330	}
	331
	332	static int param_get_battery_status(char buffer, const struct kernel_param kp)
	333	{
	334	strcpy(buffer, map_get_key(map_status, battery_status, "unknown"));
	335	return strlen(buffer);
	336	}
	337
	338	static int param_set_battery_health(const char *key,
	339	const struct kernel_param *kp)
	340	{
	341	battery_health = map_get_value(map_health, key, battery_health);
	342	power_supply_changed(&test_power_supplies[1]);
	343	return 0;
	344	}
	345
	346	static int param_get_battery_health(char buffer, const struct kernel_param kp)
	347	{
	348	strcpy(buffer, map_get_key(map_health, battery_health, "unknown"));
	349	return strlen(buffer);
	350	}
	351
	352	static int param_set_battery_present(const char *key,
	353	const struct kernel_param *kp)
	354	{
	355	battery_present = map_get_value(map_present, key, battery_present);
	356	power_supply_changed(&test_power_supplies[0]);
	357	return 0;
	358	}
	359
	360	static int param_get_battery_present(char *buffer,
	361	const struct kernel_param *kp)
	362	{
	363	strcpy(buffer, map_get_key(map_present, battery_present, "unknown"));
	364	return strlen(buffer);
	365	}
	366
	367	static int param_set_battery_technology(const char *key,
	368	const struct kernel_param *kp)
	369	{
	370	battery_technology = map_get_value(map_technology, key,
	371	battery_technology);
	372	power_supply_changed(&test_power_supplies[1]);
	373	return 0;
	374	}
	375
	376	static int param_get_battery_technology(char *buffer,
	377	const struct kernel_param *kp)
	378	{
	379	strcpy(buffer,
	380	map_get_key(map_technology, battery_technology, "unknown"));
	381	return strlen(buffer);
	382	}
	383
	384	static int param_set_battery_capacity(const char *key,
	385	const struct kernel_param *kp)
	386	{
	387	int tmp;
388
389	if (1 != sscanf(key, "%d", &tmp))
390	return -EINVAL;
391
392	battery_capacity = tmp;
393	power_supply_changed(&test_power_supplies[1]);
394	return 0;
395	}
396
397	#define param_get_battery_capacity param_get_int
398
85a392d4 DES	399	static int param_set_battery_voltage(const char *key,
	400	const struct kernel_param *kp)
	401	{
	402	int tmp;
	403
	404	if (1 != sscanf(key, "%d", &tmp))
	405	return -EINVAL;
	406
	407	battery_voltage = tmp;
	408	power_supply_changed(&test_power_supplies[1]);
	409	return 0;
	410	}
	411
	412	#define param_get_battery_voltage param_get_int
	413
f17ef9b2 JS	414	static struct kernel_param_ops param_ops_ac_online = {
	415	.set = param_set_ac_online,
	416	.get = param_get_ac_online,
	417	};
	418
73847375 DES	419	static struct kernel_param_ops param_ops_usb_online = {
	420	.set = param_set_usb_online,
	421	.get = param_get_usb_online,
	422	};
	423
f17ef9b2 JS	424	static struct kernel_param_ops param_ops_battery_status = {
	425	.set = param_set_battery_status,
	426	.get = param_get_battery_status,
	427	};
	428
	429	static struct kernel_param_ops param_ops_battery_present = {
	430	.set = param_set_battery_present,
	431	.get = param_get_battery_present,
	432	};
	433
	434	static struct kernel_param_ops param_ops_battery_technology = {
	435	.set = param_set_battery_technology,
	436	.get = param_get_battery_technology,
	437	};
	438
	439	static struct kernel_param_ops param_ops_battery_health = {
	440	.set = param_set_battery_health,
	441	.get = param_get_battery_health,
	442	};
	443
	444	static struct kernel_param_ops param_ops_battery_capacity = {
	445	.set = param_set_battery_capacity,
	446	.get = param_get_battery_capacity,
	447	};
	448
85a392d4 DES	449	static struct kernel_param_ops param_ops_battery_voltage = {
	450	.set = param_set_battery_voltage,
	451	.get = param_get_battery_voltage,
	452	};
f17ef9b2 JS	453
f17ef9b2 JS	454	#define param_check_ac_online(name, p) __param_check(name, p, void);
73847375	455	#define param_check_usb_online(name, p) __param_check(name, p, void);
f17ef9b2 JS	456	#define param_check_battery_status(name, p) __param_check(name, p, void);
	457	#define param_check_battery_present(name, p) __param_check(name, p, void);
	458	#define param_check_battery_technology(name, p) __param_check(name, p, void);
	459	#define param_check_battery_health(name, p) __param_check(name, p, void);
	460	#define param_check_battery_capacity(name, p) __param_check(name, p, void);
85a392d4	461	#define param_check_battery_voltage(name, p) __param_check(name, p, void);
f17ef9b2 JS	462
	463
	464	module_param(ac_online, ac_online, 0644);
	465	MODULE_PARM_DESC(ac_online, "AC charging state <on\|off>");
	466
73847375 DES	467	module_param(usb_online, usb_online, 0644);
	468	MODULE_PARM_DESC(usb_online, "USB charging state <on\|off>");
	469
f17ef9b2 JS	470	module_param(battery_status, battery_status, 0644);
	471	MODULE_PARM_DESC(battery_status,
	472	"battery status <charging\|discharging\|not-charging\|full>");
	473
	474	module_param(battery_present, battery_present, 0644);
	475	MODULE_PARM_DESC(battery_present,
	476	"battery presence state <good\|overheat\|dead\|overvoltage\|failure>");
	477
	478	module_param(battery_technology, battery_technology, 0644);
	479	MODULE_PARM_DESC(battery_technology,
	480	"battery technology <NiMH\|LION\|LIPO\|LiFe\|NiCd\|LiMn>");
	481
	482	module_param(battery_health, battery_health, 0644);
	483	MODULE_PARM_DESC(battery_health,
	484	"battery health state <good\|overheat\|dead\|overvoltage\|failure>");
	485
	486	module_param(battery_capacity, battery_capacity, 0644);
	487	MODULE_PARM_DESC(battery_capacity, "battery capacity (percentage)");
	488
85a392d4 DES	489	module_param(battery_voltage, battery_voltage, 0644);
85a392d4 DES	490	MODULE_PARM_DESC(battery_voltage, "battery voltage (millivolts)");
f17ef9b2	491
a1e50fd4 AV	492	MODULE_DESCRIPTION("Power supply driver for testing");
	493	MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
	494	MODULE_LICENSE("GPL");