mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 18:41:23 +00:00
411643e949
Simplify code by using sprintf instead of strcpy+strcat+strlen. Signed-off-by: Harley A.W. Lorenzo <hl1998@protonmail.com> Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
592 lines
16 KiB
C
592 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* 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
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/power_supply.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/delay.h>
|
|
#include <generated/utsrelease.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 int battery_charge_counter = -1000;
|
|
static int battery_current = -1600;
|
|
|
|
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_COUNTER:
|
|
val->intval = battery_charge_counter;
|
|
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;
|
|
case POWER_SUPPLY_PROP_CURRENT_AVG:
|
|
case POWER_SUPPLY_PROP_CURRENT_NOW:
|
|
val->intval = battery_current;
|
|
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_CHARGE_COUNTER,
|
|
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,
|
|
POWER_SUPPLY_PROP_CURRENT_AVG,
|
|
POWER_SUPPLY_PROP_CURRENT_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 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 (cr < 0)
|
|
return def_val;
|
|
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 inline void signal_power_supply_changed(struct power_supply *psy)
|
|
{
|
|
if (module_initialized)
|
|
power_supply_changed(psy);
|
|
}
|
|
|
|
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);
|
|
signal_power_supply_changed(test_power_supplies[TEST_AC]);
|
|
return 0;
|
|
}
|
|
|
|
static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
|
|
{
|
|
return sprintf(buffer, "%s\n",
|
|
map_get_key(map_ac_online, ac_online, "unknown"));
|
|
}
|
|
|
|
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);
|
|
signal_power_supply_changed(test_power_supplies[TEST_USB]);
|
|
return 0;
|
|
}
|
|
|
|
static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
|
|
{
|
|
return sprintf(buffer, "%s\n",
|
|
map_get_key(map_ac_online, usb_online, "unknown"));
|
|
}
|
|
|
|
static int param_set_battery_status(const char *key,
|
|
const struct kernel_param *kp)
|
|
{
|
|
battery_status = map_get_value(map_status, key, battery_status);
|
|
signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
|
|
return 0;
|
|
}
|
|
|
|
static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
|
|
{
|
|
return sprintf(buffer, "%s\n",
|
|
map_get_key(map_ac_online, battery_status, "unknown"));
|
|
}
|
|
|
|
static int param_set_battery_health(const char *key,
|
|
const struct kernel_param *kp)
|
|
{
|
|
battery_health = map_get_value(map_health, key, battery_health);
|
|
signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
|
|
return 0;
|
|
}
|
|
|
|
static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
|
|
{
|
|
return sprintf(buffer, "%s\n",
|
|
map_get_key(map_ac_online, battery_health, "unknown"));
|
|
}
|
|
|
|
static int param_set_battery_present(const char *key,
|
|
const struct kernel_param *kp)
|
|
{
|
|
battery_present = map_get_value(map_present, key, battery_present);
|
|
signal_power_supply_changed(test_power_supplies[TEST_AC]);
|
|
return 0;
|
|
}
|
|
|
|
static int param_get_battery_present(char *buffer,
|
|
const struct kernel_param *kp)
|
|
{
|
|
return sprintf(buffer, "%s\n",
|
|
map_get_key(map_ac_online, battery_present, "unknown"));
|
|
}
|
|
|
|
static int param_set_battery_technology(const char *key,
|
|
const struct kernel_param *kp)
|
|
{
|
|
battery_technology = map_get_value(map_technology, key,
|
|
battery_technology);
|
|
signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
|
|
return 0;
|
|
}
|
|
|
|
static int param_get_battery_technology(char *buffer,
|
|
const struct kernel_param *kp)
|
|
{
|
|
return sprintf(buffer, "%s\n",
|
|
map_get_key(map_ac_online, battery_technology,
|
|
"unknown"));
|
|
}
|
|
|
|
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;
|
|
signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
|
|
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;
|
|
signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
|
|
return 0;
|
|
}
|
|
|
|
#define param_get_battery_voltage param_get_int
|
|
|
|
static int param_set_battery_charge_counter(const char *key,
|
|
const struct kernel_param *kp)
|
|
{
|
|
int tmp;
|
|
|
|
if (1 != sscanf(key, "%d", &tmp))
|
|
return -EINVAL;
|
|
|
|
battery_charge_counter = tmp;
|
|
signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
|
|
return 0;
|
|
}
|
|
|
|
#define param_get_battery_charge_counter param_get_int
|
|
|
|
static int param_set_battery_current(const char *key,
|
|
const struct kernel_param *kp)
|
|
{
|
|
int tmp;
|
|
|
|
if (1 != sscanf(key, "%d", &tmp))
|
|
return -EINVAL;
|
|
|
|
battery_current = tmp;
|
|
signal_power_supply_changed(test_power_supplies[TEST_BATTERY]);
|
|
return 0;
|
|
}
|
|
|
|
#define param_get_battery_current param_get_int
|
|
|
|
static const struct kernel_param_ops param_ops_ac_online = {
|
|
.set = param_set_ac_online,
|
|
.get = param_get_ac_online,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_usb_online = {
|
|
.set = param_set_usb_online,
|
|
.get = param_get_usb_online,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_status = {
|
|
.set = param_set_battery_status,
|
|
.get = param_get_battery_status,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_present = {
|
|
.set = param_set_battery_present,
|
|
.get = param_get_battery_present,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_technology = {
|
|
.set = param_set_battery_technology,
|
|
.get = param_get_battery_technology,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_health = {
|
|
.set = param_set_battery_health,
|
|
.get = param_get_battery_health,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_capacity = {
|
|
.set = param_set_battery_capacity,
|
|
.get = param_get_battery_capacity,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_voltage = {
|
|
.set = param_set_battery_voltage,
|
|
.get = param_get_battery_voltage,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_charge_counter = {
|
|
.set = param_set_battery_charge_counter,
|
|
.get = param_get_battery_charge_counter,
|
|
};
|
|
|
|
static const struct kernel_param_ops param_ops_battery_current = {
|
|
.set = param_set_battery_current,
|
|
.get = param_get_battery_current,
|
|
};
|
|
|
|
#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);
|
|
#define param_check_battery_charge_counter(name, p) __param_check(name, p, void);
|
|
#define param_check_battery_current(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_param(battery_charge_counter, battery_charge_counter, 0644);
|
|
MODULE_PARM_DESC(battery_charge_counter,
|
|
"battery charge counter (microampere-hours)");
|
|
|
|
module_param(battery_current, battery_current, 0644);
|
|
MODULE_PARM_DESC(battery_current, "battery current (milliampere)");
|
|
|
|
MODULE_DESCRIPTION("Power supply driver for testing");
|
|
MODULE_AUTHOR("Anton Vorontsov <cbouatmailru@gmail.com>");
|
|
MODULE_LICENSE("GPL");
|