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/*
* 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>
enum test_power_id {
TEST_AC,
TEST_BATTERY,
TEST_USB,
TEST_POWER_NUM,
};
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 bool module_initialized;
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[TEST_POWER_NUM];
static const struct power_supply_desc test_power_desc[] = {
[TEST_AC] = {
.name = "test_ac",
.type = POWER_SUPPLY_TYPE_MAINS,
.properties = test_power_ac_props,
.num_properties = ARRAY_SIZE(test_power_ac_props),
.get_property = test_power_get_ac_property,
},
[TEST_BATTERY] = {
.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,
},
[TEST_USB] = {
.name = "test_usb",
.type = POWER_SUPPLY_TYPE_USB,
.properties = test_power_ac_props,
.num_properties = ARRAY_SIZE(test_power_ac_props),
.get_property = test_power_get_usb_property,
},
};
static const struct power_supply_config test_power_configs[] = {
{
/* test_ac */
.supplied_to = test_power_ac_supplied_to,
.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
}, {
/* test_battery */
}, {
/* test_usb */
.supplied_to = test_power_ac_supplied_to,
.num_supplicants = ARRAY_SIZE(test_power_ac_supplied_to),
},
};
static int __init test_power_init(void)
{
int i;
int ret;
BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_supplies));
BUILD_BUG_ON(TEST_POWER_NUM != ARRAY_SIZE(test_power_configs));
for (i = 0; i < ARRAY_SIZE(test_power_supplies); i++) {
test_power_supplies[i] = power_supply_register(NULL,
&test_power_desc[i],
&test_power_configs[i]);
if (IS_ERR(test_power_supplies[i])) {
pr_err("%s: failed to register %s\n", __func__,
test_power_desc[i].name);
ret = PTR_ERR(test_power_supplies[i]);
goto failed;
}
}
module_initialized = true;
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_initialized = false;
}
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, "off" },
{ 1, "on" },
{ -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
|