diff options
Diffstat (limited to 'drivers/power/supply/test_power.c')
| -rw-r--r-- | drivers/power/supply/test_power.c | 539 |
1 files changed, 539 insertions, 0 deletions
diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c new file mode 100644 index 000000000..925abec45 --- /dev/null +++ b/drivers/power/supply/test_power.c @@ -0,0 +1,539 @@ +/* + * 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 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) +{ + strcpy(buffer, map_get_key(map_ac_online, ac_online, "unknown")); + strcat(buffer, "\n"); + 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); + signal_power_supply_changed(test_power_supplies[TEST_USB]); + 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")); + strcat(buffer, "\n"); + 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); + signal_power_supply_changed(test_power_supplies[TEST_BATTERY]); + 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")); + strcat(buffer, "\n"); + 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); + signal_power_supply_changed(test_power_supplies[TEST_BATTERY]); + 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")); + strcat(buffer, "\n"); + 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); + signal_power_supply_changed(test_power_supplies[TEST_AC]); + 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")); + strcat(buffer, "\n"); + 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); + signal_power_supply_changed(test_power_supplies[TEST_BATTERY]); + 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")); + strcat(buffer, "\n"); + 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; + 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 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, +}; + +#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"); |