| /* |
| * 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_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++) { |
| ret = power_supply_register(NULL, &test_power_supplies[i], |
| &test_power_configs[i]); |
| if (ret) { |
| pr_err("%s: failed to register %s\n", __func__, |
| test_power_supplies[i].name); |
| 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 (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")); |
| 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")); |
| 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")); |
| 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")); |
| 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")); |
| 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")); |
| 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 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"); |