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/*
* Power supply driver for testing.
*
* Copyright 2010 Anton Vorontsov <cbouatmailru@gmail.com>
*
* 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 test_power_ac_online = 1;
static int test_power_battery_status = POWER_SUPPLY_STATUS_CHARGING;
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 = test_power_ac_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 = test_power_battery_status;
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = POWER_SUPPLY_HEALTH_GOOD;
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = 50;
break;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
val->intval = 3600;
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_TECHNOLOGY,
POWER_SUPPLY_PROP_CHARGE_FULL,
POWER_SUPPLY_PROP_CHARGE_EMPTY,
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,
};
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,
},
};
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... */
test_power_ac_online = 0;
test_power_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);
MODULE_DESCRIPTION("Power supply driver for testing");
MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
MODULE_LICENSE("GPL");
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